/* Jiuyan AI · 九眼科技 — brand system v2 (dark · cyan → electric blue) */
:root{
  --bg:#05070b; --bg-2:#080c13; --bg-3:#0c121c;
  --panel:rgba(255,255,255,.028); --panel-2:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.085); --line-2:rgba(255,255,255,.16);
  --text:#eef3f9; --muted:#97a5b6; --dim:#6a7788;
  --cyan:#2ee6ff; --sky:#22b8ff; --blue:#1f62ff;
  --grad:linear-gradient(120deg,#2ee6ff 0%,#22a6ff 45%,#1f62ff 100%);
  --glow:0 0 0 1px rgba(46,230,255,.18),0 18px 60px -20px rgba(31,98,255,.55);
  --radius:20px; --radius-sm:12px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --header:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header) + 16px);-webkit-text-size-adjust:100%;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(46,230,255,.3);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:4px;border-radius:6px}
.container{width:min(1240px,calc(100% - 96px));margin-inline:auto}
@media(min-width:1680px){.container{width:min(1320px,calc(100% - 160px))}}
.skip-link{position:fixed;left:16px;top:-80px;z-index:100;padding:10px 18px;background:#fff;color:#000;border-radius:8px}
.skip-link:focus{top:12px}

/* type */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase;font-weight:500}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
h1{font-size:clamp(42px,6.2vw,88px);line-height:1.12;letter-spacing:-.02em;font-weight:700;margin-top:26px}
h2{font-size:clamp(30px,3.6vw,52px);line-height:1.22;letter-spacing:-.015em;font-weight:680;margin-top:18px}
h3{font-size:20px;line-height:1.45;font-weight:640}
.section{padding:clamp(80px,10vw,140px) 0;position:relative}
.section-head{max-width:720px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-lead{color:var(--muted);font-size:17px;margin-top:22px;line-height:1.9}
.section-lead strong{color:var(--text);font-weight:600}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:14px;height:52px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 36px -10px rgba(31,98,255,.8)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 46px -10px rgba(46,200,255,.8)}
.btn-ghost{border:1px solid var(--line-2);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* header */
.header{position:fixed;inset:0 0 auto;z-index:50;height:var(--header);transition:background .3s ease,border-color .3s ease,backdrop-filter .3s;border-bottom:1px solid transparent}
.header.scrolled{background:rgba(5,7,11,.78);backdrop-filter:saturate(160%) blur(18px);-webkit-backdrop-filter:saturate(160%) blur(18px);border-bottom-color:var(--line)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:32px;height:auto;filter:drop-shadow(0 0 10px rgba(46,200,255,.35))}
.brand-text{display:flex;flex-direction:column;gap:5px;line-height:1}
.brand-word{width:128px;height:auto}
.brand-text small{font-size:11px;letter-spacing:.52em;color:var(--muted)}
#navigation{display:flex;align-items:center;gap:30px;font-size:14px}
#navigation a{color:#c6d0dc;transition:color .2s}
#navigation a:hover{color:#fff}
#navigation .nav-cta{padding:9px 20px;border-radius:999px;border:1px solid rgba(46,230,255,.4);color:var(--cyan)}
#navigation .nav-cta:hover{background:var(--grad);border-color:transparent;color:#fff}
.lang-switch{font-family:var(--mono);font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);color:#c6d0dc!important}
.lang-switch:hover{border-color:var(--cyan);color:var(--cyan)!important}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:rgba(255,255,255,.03);position:relative;cursor:pointer}
.menu-toggle span{position:absolute;left:12px;right:12px;height:1.6px;background:#fff;border-radius:2px;transition:transform .3s ease,top .3s ease}
.menu-toggle span:nth-child(1){top:17px}.menu-toggle span:nth-child(2){top:25px}
.menu-toggle[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){top:21px;transform:rotate(-45deg)}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;padding:calc(var(--header) + 60px) 0 40px;display:flex;flex-direction:column;justify-content:center;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(900px 600px at 78% 45%,rgba(31,98,255,.26),transparent 60%),
    radial-gradient(600px 420px at 70% 30%,rgba(46,230,255,.14),transparent 60%),
    radial-gradient(700px 500px at 0% 100%,rgba(46,230,255,.07),transparent 60%),
    var(--bg)}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 70% 70% at 60% 45%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 70% 70% at 60% 45%,#000 20%,transparent 75%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero-lead{font-size:clamp(16px,1.35vw,19px);color:var(--muted);max-width:560px;margin-top:28px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:44px}
.hero-tags li{font-size:13px;color:#b9c5d3;padding:6px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.02)}
.hero-visual{display:flex;justify-content:center}
.scope{position:relative;width:min(460px,100%);aspect-ratio:1}
.scope-rings{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.scope-rings circle{fill:none;stroke-width:1}
.scope-rings .r1{stroke:rgba(46,230,255,.22);stroke-dasharray:2 7;transform-origin:center;animation:spin 60s linear infinite}
.scope-rings .r2{stroke:rgba(255,255,255,.08)}
.scope-rings .r3{stroke:rgba(31,98,255,.35);stroke-dasharray:80 30 10 30;transform-origin:center;animation:spin 36s linear infinite reverse}
.scope-rings .ticks line{stroke:var(--cyan);stroke-width:2;stroke-linecap:round;opacity:.8}
.scope-mark{position:absolute;left:50%;top:50%;width:54%;transform:translate(-50%,-50%);filter:drop-shadow(0 0 40px rgba(31,140,255,.45));animation:float 7s ease-in-out infinite}
.orbit{position:absolute;display:flex;align-items:center;gap:8px;font-size:13px;color:#d6e0ea;padding:7px 14px 7px 10px;border-radius:999px;background:rgba(8,14,24,.72);border:1px solid rgba(46,230,255,.22);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);white-space:nowrap}
.orbit i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.o1{top:8%;left:-4%}.o2{top:20%;right:-6%}.o3{bottom:16%;left:-10%}.o4{bottom:5%;right:2%}
.hero-foot{display:flex;align-items:center;gap:16px;margin-top:64px;padding-top:22px;border-top:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--dim)}
.hero-foot .line{width:36px;height:1px;background:var(--line-2)}
.hero-domain{margin-left:auto;color:var(--muted)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{0%,100%{transform:translate(-50%,-50%)}50%{transform:translate(-50%,-53%)}}

/* marquee */
.marquee{border-block:1px solid var(--line);background:var(--bg-2);overflow:hidden;padding:18px 0}
.marquee-track{display:flex;gap:28px;width:max-content;animation:marquee 44s linear infinite;font-size:15px;color:#aeb9c7;white-space:nowrap}
.marquee-track b{color:var(--cyan);font-weight:400}
@keyframes marquee{to{transform:translateX(-50%)}}

/* challenges */
.gap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:64px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gap{background:var(--bg);padding:36px 30px 32px;display:flex;flex-direction:column;gap:14px;transition:background .3s}
.gap:hover{background:var(--bg-3)}
.gap-no{font-family:var(--mono);font-size:13px;color:var(--cyan)}
.gap h3{font-size:21px;margin-top:18px}
.gap p{color:var(--muted);font-size:15px;flex:1}
.gap a{font-size:14px;color:#cfe9ff;margin-top:10px}
.gap a:hover{color:var(--cyan)}

/* services */
.services{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%)}
.svc-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:64px}
.svc{position:relative;padding:40px;border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--line);overflow:hidden;transition:border-color .3s,transform .3s,box-shadow .3s}
.svc::before{content:"";position:absolute;right:-120px;top:-120px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(31,98,255,.22),transparent 70%);opacity:.6;transition:opacity .3s}
.svc:hover{border-color:rgba(46,230,255,.35);transform:translateY(-4px);box-shadow:var(--glow)}
.svc:hover::before{opacity:1}
.svc-head{display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.svc-icon{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:rgba(46,230,255,.06);border:1px solid rgba(46,230,255,.2)}
.svc-icon svg{width:34px;height:34px}
.svc-no{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--dim)}
.svc h3{font-size:clamp(22px,2vw,27px);margin-top:30px;position:relative}
.svc-desc{color:var(--muted);margin-top:14px;font-size:15.5px;position:relative}
.checks{display:grid;gap:10px;margin-top:24px;position:relative}
.checks li{position:relative;padding-left:28px;font-size:15px;color:#d5dde7}
.checks li::before{content:"";position:absolute;left:0;top:.5em;width:16px;height:16px;border-radius:50%;background:rgba(46,230,255,.12);border:1px solid rgba(46,230,255,.45)}
.checks li::after{content:"";position:absolute;left:5px;top:calc(.5em + 5px);width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.svc-foot{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--cyan);position:relative}

.feature-photo{position:relative;margin-top:24px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/7;background:var(--bg-3)}
.feature-photo img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.feature-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,7,11,.92) 0%,rgba(5,7,11,.55) 42%,rgba(5,7,11,0) 75%),linear-gradient(0deg,rgba(31,98,255,.18),transparent 40%)}
.feature-photo figcaption{position:absolute;left:clamp(24px,5vw,64px);top:50%;transform:translateY(-50%);z-index:1;max-width:540px}
.feature-photo strong{display:block;margin-top:16px;font-size:clamp(22px,2.6vw,36px);line-height:1.35;font-weight:660}

/* perspective */
.perspective{background:var(--bg)}
.perspective-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px;align-items:start}
.sticky-head{position:sticky;top:calc(var(--header) + 40px)}
.perspective-mark{width:120px;margin-top:44px;opacity:.9;filter:drop-shadow(0 0 30px rgba(31,140,255,.4))}
.eyes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:e}
.eyes li{position:relative;padding:26px 22px;border-radius:16px;border:1px solid var(--line);background:var(--panel);min-height:190px;transition:background .3s,border-color .3s}
.eyes li:hover{background:rgba(46,230,255,.05);border-color:rgba(46,230,255,.3)}
.eyes li:nth-child(5){background:linear-gradient(160deg,rgba(46,230,255,.14),rgba(31,98,255,.16));border-color:rgba(46,230,255,.35)}
.eyes span{font-family:var(--mono);font-size:12px;color:var(--cyan)}
.eyes h3{font-size:18px;margin-top:26px}
.eyes p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.7}

/* geo */
.geo{background:radial-gradient(900px 500px at 50% 0%,rgba(31,98,255,.16),transparent 70%),var(--bg-2);border-block:1px solid var(--line)}
.compare{margin-top:60px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(5,7,11,.6)}
.c-row{display:grid;grid-template-columns:.7fr 1.15fr 1.15fr;border-top:1px solid var(--line)}
.c-row:first-child{border-top:0}
.c-row>span{padding:20px 26px;font-size:15px;color:#d3dbe5}
.c-row>span:first-child{color:var(--muted);font-size:14px}
.c-row>span:last-child{color:#e8f7ff}
.c-row>span+span{border-left:1px solid var(--line)}
.c-head{background:rgba(255,255,255,.03)}
.c-head>span{font-family:var(--mono);font-size:12px!important;letter-spacing:.1em;color:var(--dim)!important;padding-block:16px}
.c-head>span:last-child{color:var(--cyan)!important}
.c-span{grid-column:span 2;text-align:center;color:var(--cyan)!important}
.geo-pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:24px}
.geo-pillars article{padding:28px 26px;border-radius:16px;border:1px solid var(--line);background:var(--panel)}
.geo-pillars b{font-family:var(--mono);font-weight:500;font-size:13px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.geo-pillars h3{margin-top:18px;font-size:18px}
.geo-pillars p{color:var(--muted);font-size:14.5px;margin-top:8px;line-height:1.75}
.note{margin-top:28px;font-size:13px;color:var(--dim);text-align:center}

/* process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;position:relative}
.steps::before{content:"";position:absolute;left:0;right:0;top:27px;height:1px;background:linear-gradient(90deg,var(--cyan),var(--blue) 60%,transparent)}
.steps li{position:relative;padding-top:0}
.step-no{position:relative;z-index:1;display:grid;place-items:center;width:54px;height:54px;border-radius:50%;background:var(--bg);border:1px solid rgba(46,230,255,.45);font-family:var(--mono);font-size:14px;color:var(--cyan);box-shadow:0 0 24px -4px rgba(46,230,255,.4)}
.step-en{display:block;margin-top:26px;font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--dim)}
.steps h3{font-size:22px;margin-top:6px}
.steps p{color:var(--muted);font-size:15px;margin-top:10px}
.step-out{margin-top:18px!important;padding:12px 14px;border-radius:10px;background:var(--panel);border:1px solid var(--line);font-size:14px!important;color:#d6e0ea!important}
.step-out b{color:var(--cyan);font-weight:500;margin-right:10px;font-size:12px;font-family:var(--mono);letter-spacing:.08em}

/* fit */
.fit{background:var(--bg-2);border-top:1px solid var(--line)}
.fit-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.fit-cols{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fit-card{padding:32px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
.fit-card .checks{margin-top:20px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tags li{font-size:14px;padding:6px 14px;border-radius:999px;border:1px solid rgba(46,230,255,.22);background:rgba(46,230,255,.04);color:#d4ecff}
.fit-note{margin-top:18px;font-size:12.5px;color:var(--dim)}

/* about */
.about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.about-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/5}
.about-media img{width:100%;height:100%;object-fit:cover;object-position:62% center}
.about-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,11,0) 50%,rgba(5,7,11,.85)),linear-gradient(120deg,rgba(31,98,255,.12),transparent 50%)}
.about-badge{position:absolute;left:22px;right:22px;bottom:22px;z-index:1;display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(8,12,19,.72);border:1px solid var(--line-2);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.about-badge img{width:30px}
.about-badge span{font-weight:600;font-size:15px;line-height:1.4}
.about-badge small{display:block;font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:.16em;color:var(--muted)}
.about-lead{font-size:19px;color:#fff;margin-top:24px}
.about-copy>p:not(.eyebrow):not(.about-lead){color:var(--muted);margin-top:16px}
.values{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:34px}
.values article{padding:20px;border-radius:14px;border:1px solid var(--line);background:var(--panel)}
.values h3{font-size:16px;display:flex;align-items:center;gap:10px}
.values h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--grad);transform:rotate(45deg)}
.values p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.7}

/* faq */
.faq{background:var(--bg-2);border-top:1px solid var(--line)}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:72px;align-items:start}
.faq-items{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 0;font-size:17.5px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex-shrink:0;width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);background:
  linear-gradient(var(--cyan),var(--cyan)) center/10px 1.5px no-repeat,
  linear-gradient(var(--cyan),var(--cyan)) center/1.5px 10px no-repeat;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg);border-color:rgba(46,230,255,.5)}
.faq summary:hover{color:var(--cyan)}
.faq details p{color:var(--muted);padding:0 48px 26px 0;font-size:15.5px}

/* contact */
.contact{padding:clamp(80px,10vw,130px) 0}
.contact-card{position:relative;overflow:hidden;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding:clamp(36px,6vw,80px);border-radius:28px;border:1px solid rgba(46,230,255,.25);background:linear-gradient(135deg,#0a1830 0%,#070d18 55%,#05070b 100%)}
.contact-glow{position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(31,98,255,.45),transparent 65%);pointer-events:none}
.contact-card::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:linear-gradient(90deg,transparent,#000);mask-image:linear-gradient(90deg,transparent,#000);pointer-events:none}
.contact-copy,.contact-info{position:relative;z-index:1}
.contact-copy>p:last-child{color:var(--muted);margin-top:20px;max-width:520px;font-size:16.5px}
.contact-info{padding:30px;border-radius:18px;background:rgba(5,7,11,.6);border:1px solid var(--line-2);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.contact-label{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--cyan)}
.contact-info h3{font-size:22px;margin-top:10px}
.contact-info dl{margin-top:20px;display:grid;gap:0}
.contact-info dl div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px}
.contact-info dt{color:var(--muted)}
.contact-info dd{text-align:right}
.contact-info dd a{color:var(--cyan);font-weight:600}
.contact-info dd a:hover{text-decoration:underline}
.pending{color:var(--cyan)}
.contact-wechat{display:flex;align-items:center;gap:16px;margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
.contact-wechat img{width:76px;height:76px;border-radius:10px;background:#fff;padding:6px;flex-shrink:0}
.contact-wechat span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase}
.contact-wechat p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.6}

/* footer */
.footer{border-top:1px solid var(--line);background:var(--bg);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.footer-brand img{width:200px}
.footer-brand p{color:var(--muted);margin-top:18px;font-size:15px}
.footer-nav{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-nav h3{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--dim);font-weight:500;margin-bottom:6px}
.footer-nav a{color:#c3cdd9}
.footer-nav a:hover{color:var(--cyan)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;margin-top:56px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--dim)}
.to-top{margin-left:auto;color:var(--muted)}
.to-top:hover{color:var(--cyan)}

/* reveal (only when JS is on) */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}

/* 404 */
.notfound{min-height:100vh;display:grid;place-items:center;text-align:center;padding:40px 24px;background:radial-gradient(700px 500px at 50% 40%,rgba(31,98,255,.22),transparent 65%),var(--bg)}
.notfound img{width:120px;margin:0 auto 32px}
.notfound p{color:var(--muted);margin-top:16px}
.notfound .btn{margin-top:32px}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  #navigation{gap:22px}
  .gap-grid{grid-template-columns:repeat(2,1fr)}
  .geo-pillars{grid-template-columns:repeat(2,1fr)}
  .fit-grid,.faq-grid{grid-template-columns:1fr;gap:44px}
  .o2{right:-1%}.o3{left:-4%}
  .perspective-grid{gap:48px}
}
@media (max-width:1020px){
  :root{--header:68px}
  .container{width:calc(100% - 56px)}
  .menu-toggle{display:block}
  #navigation{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:12px 28px 28px;background:rgba(5,7,11,.97);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line);font-size:17px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .25s,transform .25s,visibility 0s .25s;max-height:calc(100vh - var(--header));overflow:auto}
  #navigation.is-open{opacity:1;transform:none;visibility:visible;transition:opacity .25s,transform .25s}
  #navigation a{padding:15px 0;border-bottom:1px solid var(--line)}
  #navigation .nav-cta{margin-top:18px;text-align:center;border-bottom:1px solid rgba(46,230,255,.4)}
  #navigation .lang-switch{align-self:flex-start;margin-top:14px;border-bottom:0}
  .header.menu-open{background:rgba(5,7,11,.97);backdrop-filter:none;-webkit-backdrop-filter:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .scope{width:min(340px,78vw)}
  .perspective-grid,.about-grid{grid-template-columns:1fr}
  .sticky-head{position:static}
  .perspective-mark{display:none}
  .svc-list{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:44px}
  .steps::before{display:none}
  .about-media{aspect-ratio:16/10}
  .contact-card{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:15.5px}
  .container{width:calc(100% - 40px)}
  .hero{min-height:auto;padding-top:calc(var(--header) + 28px)}
  .hero-foot{margin-top:44px;flex-wrap:wrap}
  .hero-foot .hero-domain{margin-left:0;width:100%}
  .orbit{font-size:11.5px;padding:5px 11px 5px 8px}
  .o1{left:-2%}.o2{right:-2%}.o3{left:-2%}.o4{right:0}
  .gap-grid{grid-template-columns:1fr;margin-top:44px}
  .gap{padding:28px 24px}
  .gap h3{margin-top:6px}
  .svc{padding:28px 24px}
  .svc-list{margin-top:44px}
  .feature-photo{aspect-ratio:4/5}
  .feature-photo img{object-position:70% center}
  .feature-photo::after{background:linear-gradient(0deg,rgba(5,7,11,.95) 0%,rgba(5,7,11,.5) 50%,rgba(5,7,11,.1) 100%)}
  .feature-photo figcaption{top:auto;bottom:28px;transform:none;right:24px}
  .eyes{grid-template-columns:repeat(2,1fr);gap:10px}
  .eyes li{min-height:0;padding:20px 18px}
  .eyes li:last-child{grid-column:1/-1}
  .eyes h3{margin-top:14px;font-size:16.5px}
  .compare{border:0;background:none;border-radius:0}
  .c-head{display:none}
  .c-row{grid-template-columns:1fr;border:1px solid var(--line);border-radius:14px;margin-top:12px;background:var(--panel);overflow:hidden}
  .c-row>span{padding:12px 18px}
  .c-row>span+span{border-left:0;border-top:1px solid var(--line)}
  .c-row>span:first-child{color:var(--cyan);font-family:var(--mono);font-size:12px;letter-spacing:.1em;background:rgba(255,255,255,.03)}
  .c-row>span:nth-child(2)::before{content:"SEO　";color:var(--dim);font-family:var(--mono);font-size:12px}
  .c-row>span:nth-child(3)::before{content:"GEO　";color:var(--cyan);font-family:var(--mono);font-size:12px}
  .c-row .c-span::before{content:none!important}
  .c-span{grid-column:auto;text-align:left}
  .geo-pillars,.fit-cols,.values{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:36px}
  .faq summary{font-size:16px;padding:20px 0}
  .faq details p{padding-right:0}
  .contact-info{padding:22px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .to-top{margin-left:0}
}
@media (max-width:380px){
  .eyes{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}
  .brand-word{width:108px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}
@media print{
  .header,.marquee,.hero-visual{display:none}
  body{background:#fff;color:#000}
}

/* ===== Insights / blog (v3) ===== */
.footer-grid-4{grid-template-columns:1.4fr 1fr 1fr 1fr}
.chip{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;border:1px solid rgba(46,230,255,.35);color:var(--cyan);font-size:12.5px;white-space:nowrap}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chips .chip{height:36px;padding:0 16px;font-size:14px;transition:background .2s,border-color .2s}
.chips .chip:hover{background:rgba(46,230,255,.1);border-color:var(--cyan)}
.text-link{color:var(--cyan);font-size:15px;font-weight:600}
.text-link:hover{text-decoration:underline}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--dim);margin-bottom:26px}
.breadcrumb li+li::before{content:"/";margin-right:6px;color:var(--line-2)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current]{color:var(--muted)}

.blog-hero{padding:calc(var(--header) + 72px) 0 40px;position:relative;overflow:hidden}
.blog-hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:720px;height:720px;background:radial-gradient(closest-side,rgba(31,98,255,.28),transparent 70%);pointer-events:none;z-index:-1}
.blog-hero h1{font-size:clamp(38px,5.4vw,72px);line-height:1.14;letter-spacing:-.02em;font-weight:720;margin-top:20px}
.blog-hero .section-lead{max-width:720px}
.blog-featured{padding:20px 0 10px}
.blog-body{padding-bottom:40px}
.blog-cat{padding-top:72px;scroll-margin-top:calc(var(--header) + 12px)}
.blog-cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-bottom:22px;margin-bottom:28px;border-bottom:1px solid var(--line)}
.blog-cat-head h2{margin:0;font-size:clamp(24px,2.4vw,32px)}
.blog-cat-head p{color:var(--muted);font-size:15px;max-width:560px}

.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;transition:border-color .25s,transform .25s}
.post-card:hover{border-color:rgba(46,230,255,.4);transform:translateY(-3px)}
.post-card-img{display:block;aspect-ratio:1200/630;overflow:hidden;background:var(--bg-3)}
.post-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .post-card-img img{transform:scale(1.03)}
.post-card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px}
.post-card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--dim)}
.post-card h3{font-size:18.5px;line-height:1.5;font-weight:650}
.post-card h3 a:hover{color:var(--cyan)}
.post-card p:last-child{color:var(--muted);font-size:14.5px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card-lg{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;border-color:rgba(46,230,255,.25);background:linear-gradient(135deg,#0a1830 0%,#070d18 60%,#05070b 100%)}
.post-card-lg .post-card-img{height:100%;aspect-ratio:auto}
.post-card-lg .post-card-body{padding:clamp(28px,4vw,52px)}
.post-card-lg h3{font-size:clamp(22px,2.4vw,32px);line-height:1.35}
.post-card-lg p:last-child{-webkit-line-clamp:4;font-size:15.5px}

/* article */
.post-hero{padding:calc(var(--header) + 56px) 0 0;position:relative}
.post-hero::before{content:"";position:absolute;top:0;right:0;width:640px;height:640px;background:radial-gradient(closest-side,rgba(31,98,255,.22),transparent 70%);pointer-events:none;z-index:-1}
.post-narrow{max-width:900px}
.post-hero h1{font-size:clamp(30px,4.2vw,52px);line-height:1.28;letter-spacing:-.015em;font-weight:720;margin-top:18px}
.post-dek{color:var(--muted);font-size:clamp(16px,1.4vw,18.5px);line-height:1.85;margin-top:22px;max-width:780px}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;font-size:13.5px;color:var(--dim)}
.post-meta span:first-child{color:#c6d0dc}
.post-wide{margin-top:44px}
.post-cover{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.post-cover img{width:100%}
.post-layout{display:grid;grid-template-columns:220px minmax(0,760px);gap:72px;justify-content:center;padding:64px 0 24px}
.post-toc{position:sticky;top:calc(var(--header) + 28px);align-self:start;font-size:13.5px}
.toc-title{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--dim);text-transform:uppercase;margin-bottom:14px}
.post-toc ol{border-left:1px solid var(--line);counter-reset:toc}
.post-toc li a{display:block;padding:7px 0 7px 16px;margin-left:-1px;border-left:1px solid transparent;color:var(--muted);line-height:1.5}
.post-toc li a:hover{color:var(--cyan);border-left-color:var(--cyan)}
.keypoints{border:1px solid rgba(46,230,255,.28);border-radius:var(--radius);background:linear-gradient(135deg,rgba(46,230,255,.07),rgba(31,98,255,.04));padding:26px 30px;margin-bottom:48px}
.keypoints h2{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--cyan);margin:0 0 14px;font-weight:500}
.keypoints li{position:relative;padding-left:22px;color:#dbe3ec;font-size:15.5px;line-height:1.8}
.keypoints li+li{margin-top:8px}
.keypoints li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;background:var(--grad)}

.prose{font-size:17px;line-height:2;color:#d6dde6}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(23px,2.2vw,28px);line-height:1.45;margin-top:2.2em;color:var(--text);scroll-margin-top:calc(var(--header) + 20px)}
.prose h3{font-size:19px;line-height:1.5;margin-top:1.8em;color:var(--text);font-weight:650}
.prose h2+p,.prose h3+p{margin-top:.7em}
.prose a,.post-service a,.post-author a{color:var(--cyan);text-decoration:underline;text-decoration-color:rgba(46,230,255,.4);text-underline-offset:4px}
.prose a:hover{text-decoration-color:var(--cyan)}
.prose strong{color:var(--text)}
.prose ul li,.prose ol li{position:relative;padding-left:24px}
.prose ul li+li{margin-top:.45em}
.prose ul li::before{content:"";position:absolute;left:4px;top:.85em;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.prose blockquote{margin:1.6em 0;padding:22px 26px;border-left:3px solid var(--cyan);background:var(--panel-2);border-radius:0 14px 14px 0;font-size:17.5px;color:var(--text)}
.prose .lead-in{font-size:18px;color:var(--text)}
.prose .fine{font-size:13px;color:var(--dim);margin-top:.6em}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:1.6em 0;-webkit-overflow-scrolling:touch}
.prose table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.7;min-width:560px}
.prose th,.prose td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.prose thead th{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--cyan);font-weight:500;background:rgba(255,255,255,.03)}
.prose tbody th{color:var(--text);font-weight:600;white-space:nowrap}
.prose tbody tr:last-child>*{border-bottom:0}
.prose td{color:var(--muted)}
.ba{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:1.6em 0 .4em}
.ba-item{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:var(--panel)}
.ba-item span{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--dim)}
.ba-item p{margin-top:8px;font-size:15.5px;line-height:1.7;font-family:Georgia,"Times New Roman",serif;color:#c3cdd9}
.ba-after{border-color:rgba(46,230,255,.35);background:rgba(46,230,255,.05)}
.ba-after span{color:var(--cyan)}
.ba-after p{color:var(--text)}
.ba-before p{text-decoration:line-through;text-decoration-color:rgba(255,120,120,.45)}
.diagram{margin:1.8em 0;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);padding:22px}
.diagram svg{width:100%;height:auto;display:block}
.diagram figcaption,.post-cover figcaption{font-size:13px;color:var(--dim);margin-top:12px;text-align:center}

.post-faq{margin-top:64px}
.post-faq h2{font-size:clamp(23px,2.2vw,28px);margin:0 0 18px}
.post-refs{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.post-refs h2{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--dim);margin:0 0 12px;font-weight:500}
.post-refs ol{list-style:decimal;padding-left:20px;font-size:14px;color:var(--muted)}
.post-refs li+li{margin-top:6px}
.post-refs a{color:#c3cdd9;word-break:break-word}
.post-refs a:hover{color:var(--cyan)}
.post-service{margin-top:48px;padding:22px 26px;border-radius:14px;border:1px solid var(--line-2);background:var(--panel);font-size:15.5px;color:var(--muted)}
.post-service span{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--cyan);margin-bottom:6px}
.post-author{margin-top:28px;font-size:13.5px;color:var(--dim);line-height:1.8}
.post-author strong{color:var(--muted)}
.related{padding-top:72px;padding-bottom:0}
.related-head{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:28px}
.related-head h2{margin:0;font-size:clamp(26px,2.6vw,36px)}
.contact-compact{padding-top:clamp(64px,8vw,110px)}
.contact-compact h2{font-size:clamp(28px,3vw,42px)}

/* insights on homepage */
.insights .post-grid{grid-template-columns:repeat(4,1fr);margin-top:56px}
.insights .post-card h3{font-size:17px}
.insights-foot{margin-top:40px;text-align:center}
.geo-read{margin-top:18px;text-align:center;font-size:15px}
.geo-read a{color:var(--cyan);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(46,230,255,.4)}
.svc-read{margin-top:14px;font-size:14px}
.svc-read a{color:var(--cyan)}
.svc-read a:hover{text-decoration:underline}

@media (max-width:1180px){
  .post-layout{grid-template-columns:minmax(0,760px);gap:0}
  .post-toc{display:none}
  .insights .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid-4{grid-template-columns:1fr 1fr 1fr}
  .footer-grid-4 .footer-brand{grid-column:1/-1}
}
@media (max-width:1020px){
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .post-card-lg{grid-template-columns:1fr}
  .post-card-lg .post-card-img{aspect-ratio:1200/630}
}
@media (max-width:760px){
  .post-grid,.insights .post-grid{grid-template-columns:1fr}
  .blog-hero{padding-top:calc(var(--header) + 40px)}
  .post-hero{padding-top:calc(var(--header) + 32px)}
  .post-wide{margin-top:30px}
  .post-cover{border-radius:14px}
  .post-layout{padding-top:40px}
  .prose{font-size:16px;line-height:1.95}
  .keypoints{padding:22px 20px;margin-bottom:36px}
  .ba{grid-template-columns:1fr}
  .diagram{padding:12px;border-radius:14px}
  .prose table{font-size:14px}
  .prose th,.prose td{padding:12px 14px}
  .footer-grid-4{grid-template-columns:1fr 1fr}
  .related-head{flex-direction:column;gap:8px}
}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.post-hero h1,.blog-hero h1,.post-card h3,.prose h2,h2{text-wrap:balance}
.post-dek,.section-lead{text-wrap:pretty}
.post-grid:has(>:nth-child(2):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:760px){
  .post-grid:has(>:nth-child(2):last-child){grid-template-columns:1fr}
  .table-wrap{border:0;border-radius:0;overflow:visible}
  .prose table{min-width:0;display:block}
  .prose thead{display:none}
  .prose tbody{display:block}
  .prose tbody tr{display:block;border:1px solid var(--line);border-radius:14px;background:var(--panel);margin-top:12px;overflow:hidden}
  .prose tbody th,.prose tbody td{display:block;border:0;padding:10px 16px;white-space:normal}
  .prose tbody th{background:rgba(255,255,255,.035);color:var(--cyan);font-size:14px}
  .prose tbody td+td,.prose tbody th+td{border-top:1px solid var(--line)}
  .prose tbody td::before{content:attr(data-label);display:block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--dim);margin-bottom:2px}
}