/* ═══════════════════════════════════════════════════════════
   SHANMAO TECH — PAPER ORANGE v5 · "HD"
   意式极简 × 创客工程 — warm paper, one arancio accent,
   WebGL light field, retina hairlines, living product.
   Shared by index.html / index-en.html
   ═══════════════════════════════════════════════════════════ */
/* ═══════════════════════════════════════════════════════════
   自托管字体 — 不再依赖 fonts.googleapis.com（国内常被墙，且会阻塞加载）
   Latin 仅用于英文/数字；中文走系统字体，零下载。
   ═══════════════════════════════════════════════════════════ */
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url("fonts/space-grotesk-500.woff2") format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url("fonts/space-grotesk-700.woff2") format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url("fonts/ibm-plex-mono-400.woff2") format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url("fonts/ibm-plex-mono-500.woff2") format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --paper:#FAF9F5;
  --paper2:#F3F1EB;
  --surface:#FFFFFF;
  --ink:#141519;
  --ink2:#45474E;
  --mut:#6F717A;
  --line:#E6E2D9;
  --line2:#D6D1C5;
  --acc:#E8470B;
  --acc-deep:#C23A06;
  --acc-soft:#FFF0E6;
  --night:#0D0E11;
  --night2:#16171C;
  --fD:'Space Grotesk','PingFang SC','Microsoft YaHei',sans-serif;
  --fM:'IBM Plex Mono',ui-monospace,'PingFang SC','Microsoft YaHei',monospace;
  --fZ:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
  --mx:1240px;
  --gut:clamp(20px,4vw,40px);
  --r:18px;
  --r-lg:28px;
  --hair:1px;
  --sh:0 1px 0 rgba(20,21,25,.03),0 1px 3px rgba(20,21,25,.04);
  --sh-h:0 1px 0 rgba(20,21,25,.03),0 24px 48px -18px rgba(20,21,25,.18),0 8px 16px -8px rgba(20,21,25,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-io:cubic-bezier(.65,0,.35,1);
}
@media (min-resolution:2dppx){:root{--hair:.5px}}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--fZ);font-size:16px;line-height:1.75;overflow-x:hidden;font-feature-settings:"palt" 0,"kern" 1}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit}
::selection{background:var(--acc);color:#fff}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:6px}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}

/* film grain — kills gradient banding, adds paper tooth */
.grain{position:fixed;inset:0;z-index:3000;pointer-events:none;background:url("grain.png") repeat;background-size:180px 180px}

/* ── type utilities ── */
.mono{font-family:var(--fM);letter-spacing:.08em;text-transform:uppercase}
.pill{display:inline-flex;align-items:center;gap:8px;font-family:var(--fM);font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:7px 14px;border-radius:999px;border:var(--hair) solid var(--line2);color:var(--ink2);background:var(--surface);line-height:1.4}
.pill-acc{color:var(--acc-deep);border-color:rgba(232,71,11,.35);background:var(--acc-soft)}
.pill-dash{border-style:dashed;color:var(--mut);background:transparent}
.pill .dot,.kicker .dot{width:6px;height:6px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 0 rgba(232,71,11,.5);animation:ping 2.4s var(--ease) infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(232,71,11,.45)}70%,100%{box-shadow:0 0 0 7px rgba(232,71,11,0)}}

/* ── buttons ── */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;font-family:var(--fZ);font-weight:700;font-size:15px;letter-spacing:.02em;padding:15px 28px;border-radius:999px;border:var(--hair) solid transparent;cursor:pointer;transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .25s,color .25s,border-color .25s;white-space:nowrap;isolation:isolate;overflow:hidden}
.btn .arr{font-family:var(--fM);font-weight:400;transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn-p{background:var(--acc);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 1px 2px rgba(194,58,6,.4),0 10px 24px -10px rgba(232,71,11,.7)}
.btn-p::before{content:'';position:absolute;inset:0;z-index:-1;background:radial-gradient(120px circle at var(--bx,50%) var(--by,50%),rgba(255,255,255,.28),transparent 60%);opacity:0;transition:opacity .3s}
.btn-p:hover{background:#DB420A;box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 1px 2px rgba(194,58,6,.4),0 18px 34px -12px rgba(232,71,11,.75)}
.btn-p:hover::before{opacity:1}
.btn-o{background:rgba(255,255,255,.7);color:var(--ink);border-color:var(--line2);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-o:hover{border-color:var(--ink);background:#fff;box-shadow:var(--sh-h)}
.btn-sm{padding:11px 20px;font-size:13.5px}
.btn:active{transform:scale(.97)}

/* ── utility strip ── */
.strip{background:var(--paper2);border-bottom:var(--hair) solid var(--line)}
.strip-in{max-width:var(--mx);margin:0 auto;padding:7px var(--gut);display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--fM);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.strip .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#2fbf71;margin-right:8px;vertical-align:1px;box-shadow:0 0 0 3px rgba(47,191,113,.15)}
.strip time{font-variant-numeric:tabular-nums}
@media(max-width:760px){.strip-in .hide-m{display:none}}

/* ── header ── */
header{position:sticky;top:0;z-index:1000;background:rgba(250,249,245,.72);backdrop-filter:saturate(1.8) blur(18px);-webkit-backdrop-filter:saturate(1.8) blur(18px);border-bottom:var(--hair) solid transparent;transition:border-color .3s,background .3s,box-shadow .3s}
header.sc{border-color:var(--line);background:rgba(250,249,245,.82);box-shadow:0 10px 30px -24px rgba(20,21,25,.35)}
.prog{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--acc);transform-origin:0 50%;transform:scaleX(var(--p,0));pointer-events:none}
.nav{max-width:var(--mx);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 var(--gut);height:70px;transition:height .35s var(--ease)}
header.sc .nav{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-tile{width:40px;height:40px;background:transparent;display:flex;align-items:center;justify-content:center;overflow:visible;flex-shrink:0}
.logo-tile img{width:100%;height:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-t1{font-size:15px;font-weight:900;letter-spacing:.04em}
.brand-t2{font-family:var(--fM);font-size:9px;letter-spacing:.24em;color:var(--mut)}
nav ul{list-style:none;display:flex;gap:2px;position:relative}
nav a{position:relative;display:block;padding:9px 15px;font-size:14.5px;font-weight:500;color:var(--ink2);border-radius:999px;transition:color .2s,background .2s;white-space:nowrap}
@media(max-width:1180px){nav a{font-size:13.5px;padding:9px 11px;letter-spacing:-.01em}}
@media(max-width:1080px){nav a{font-size:13px;padding:9px 9px}}
nav a:hover{color:var(--ink);background:rgba(20,21,25,.045)}
nav a.on{color:var(--ink)}
nav a.on::after{content:'';position:absolute;left:50%;bottom:3px;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--acc)}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.lang{font-family:var(--fM);font-size:12px;letter-spacing:.06em;color:var(--mut);display:inline-flex;align-items:center;border:var(--hair) solid var(--line2);border-radius:999px;padding:3px}
.lang a{color:var(--mut);padding:4px 10px;border-radius:999px;transition:color .2s,background .2s}
.lang a:hover{color:var(--ink)}
.lang a.cur{color:#fff;background:var(--ink)}
.lang .sep{display:none}
.ntg{display:none;position:relative;width:40px;height:40px;background:none;border:var(--hair) solid var(--line2);border-radius:12px;cursor:pointer}
.ntg span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .35s var(--ease),opacity .2s}
.ntg span:nth-child(1){top:14px}.ntg span:nth-child(2){top:19px}.ntg span:nth-child(3){top:24px}
.ntg.open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.ntg.open span:nth-child(2){opacity:0}
.ntg.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media(max-width:1020px){
  .nav{position:relative}
  nav{position:absolute;top:calc(100% + 10px);left:12px;right:12px;background:rgba(255,255,255,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:var(--hair) solid var(--line);border-radius:20px;box-shadow:var(--sh-h);padding:8px;opacity:0;transform:translateY(-8px) scale(.98);pointer-events:none;transition:opacity .25s,transform .35s var(--ease)}
  .nav.open nav{opacity:1;transform:none;pointer-events:auto}
  nav{max-height:calc(100vh - 120px);overflow-y:auto;-webkit-overflow-scrolling:touch}
  nav ul{flex-direction:column;gap:2px}
  nav a{border-radius:12px;padding:13px 16px;font-size:16px}
  nav a.on::after{left:auto;right:16px;top:50%;margin-top:-2px}
  .ntg{display:block}
  .nav-right .btn{display:none}
}

/* ── hero ── */
.hero{position:relative;padding:clamp(16px,1.8vw,26px) var(--gut) clamp(56px,7vw,100px);overflow:hidden;isolation:isolate;
  background:radial-gradient(60% 70% at 72% 40%,#FFE4D1 0%,rgba(255,228,209,0) 70%),var(--paper)}
.hero-gl{position:absolute;inset:0;width:100%;height:100%;z-index:-2;opacity:0;transition:opacity 1.6s var(--ease)}
.hero-gl.on{opacity:1}
.hero-dots,.hero-dots-hi{position:absolute;inset:0;z-index:-1;pointer-events:none;background-size:26px 26px;background-position:13px 13px}
.hero-dots{background-image:radial-gradient(circle,rgba(20,21,25,.11) .8px,transparent 1.3px);-webkit-mask-image:radial-gradient(ellipse 85% 75% at 62% 40%,#000 25%,transparent 100%);mask-image:radial-gradient(ellipse 85% 75% at 62% 40%,#000 25%,transparent 100%)}
.hero-dots-hi{background-image:radial-gradient(circle,rgba(232,71,11,.85) 1.4px,transparent 2px);-webkit-mask-image:radial-gradient(170px circle at var(--hx,-999px) var(--hy,-999px),#000 0%,transparent 100%);mask-image:radial-gradient(170px circle at var(--hx,-999px) var(--hy,-999px),#000 0%,transparent 100%);opacity:var(--ho,0);transition:opacity .5s}
.hero::after{content:'';position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(to bottom,rgba(250,249,245,0),var(--paper));z-index:-1;pointer-events:none}
.hero-in{position:relative;max-width:var(--mx);margin:0 auto;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);align-items:center}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--fM);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2);border:var(--hair) solid var(--line2);background:rgba(255,255,255,.66);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:999px;padding:8px 16px 8px 12px;margin-bottom:30px}
.kicker b{font-weight:500;color:var(--acc-deep)}
.hero h1{font-weight:900;font-size:clamp(40px,6.2vw,86px);line-height:1.08;letter-spacing:-.005em;margin-bottom:28px}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:.06em;margin-bottom:-.06em}
.hero h1 .ln>span{display:inline-block}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#F0601E 0%,var(--acc) 40%,#B83505 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .cur{display:inline-block;color:var(--acc);font-family:var(--fM);font-weight:400;animation:blink 1.1s steps(1) infinite;margin-left:.04em}
@keyframes blink{50%{opacity:0}}
.hero-desc{max-width:520px;color:var(--ink2);font-size:clamp(16px,1.35vw,18px);line-height:1.9;margin-bottom:38px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:52px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:var(--hair) solid var(--line2);max-width:540px}
.hst{padding:20px 18px 0 0}
.hst+.hst{padding-left:20px;border-left:var(--hair) solid var(--line2)}
.hst b{display:block;font-family:var(--fD);font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.15;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.hst b sup{font-size:.55em;color:var(--acc);vertical-align:.55em;margin-left:1px}
.hst span{font-family:var(--fM);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}

/* hero stage — living robot */
.stage{position:relative;aspect-ratio:1/1;max-width:600px;width:100%;margin:0 auto;perspective:1400px}
.stage-frame{position:absolute;inset:4%;border:1px dashed rgba(20,21,25,.14);border-radius:50%;pointer-events:none}
.stage-frame::before,.stage-frame::after{content:'';position:absolute;border-radius:50%;inset:9%;border:1px solid rgba(20,21,25,.06);background:radial-gradient(closest-side,rgba(255,255,255,.55),rgba(255,255,255,0))}
.stage-frame::after{inset:-8%;border-style:dashed;border-color:rgba(232,71,11,.18);animation:spin 80s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.tick{position:absolute;font-family:var(--fM);font-size:10px;letter-spacing:.14em;color:var(--mut);text-transform:uppercase}
.tick.t1{top:2%;left:50%;transform:translateX(-50%)}
.tick.t2{bottom:1%;left:50%;transform:translateX(-50%)}
.bot-wrap{position:absolute;inset:6%;transform-style:preserve-3d;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));will-change:transform}
.bot-float{position:absolute;inset:0;animation:float 6.5s var(--ease-io) infinite}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -10px}}
.bot{position:absolute;inset:0}
.bot img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 30px 34px rgba(60,30,10,.16)) drop-shadow(0 4px 6px rgba(20,21,25,.08))}
.bot-shadow{position:absolute;left:18%;right:18%;bottom:7%;height:7%;border-radius:50%;background:radial-gradient(closest-side,rgba(60,30,10,.28),rgba(60,30,10,0));filter:blur(4px);animation:shadow 6.5s var(--ease-io) infinite;transform:translateX(calc(var(--ry,0deg) * -1.4))}
@keyframes shadow{0%,100%{scale:1;opacity:1}50%{scale:.9;opacity:.75}}
/* LCD face — coordinates measured on the 1600px render */
.lcd{position:absolute;left:49.9%;top:35.3%;width:20.6%;height:19.7%;transform:scale(var(--lcd-scale,.4)));transform-origin:50% 50%;border-radius:3px;overflow:hidden;background:radial-gradient(120% 90% at 30% 20%,rgba(27,31,39,.5),rgba(5,6,8,.92) 70%);box-shadow:inset 0 0 0 1px rgba(255,255,255,.05)}.lcd::before{content:'';position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 3px);z-index:2}
.lcd::after{content:'';position:absolute;inset:0;background:linear-gradient(132deg,rgba(255,255,255,.10) 0%,rgba(255,255,255,.02) 26%,rgba(255,255,255,0) 40%);z-index:3;pointer-events:none}
.eyes{position:absolute;inset:0;transform:translate(calc(var(--ex,0%) * .5),calc(var(--ey,0%) * .5));transition:transform .18s linear}
.eye{position:absolute;top:30%;width:22%;height:36%;border-radius:28%;background:#E9FBFF;box-shadow:0 0 4px #9EEBFF,0 0 12px rgba(110,220,255,.75),0 0 26px rgba(110,220,255,.35);transform-origin:50% 60%;transition:transform .09s ease-in,height .3s var(--ease),border-radius .3s}
.eye.l{left:22%}.eye.r{right:22%}
.lcd.blink .eye{transform:scaleY(.08)}
.lcd.happy .eye{height:16%;top:40%;border-radius:50% 50% 12% 12%}
.cheek{position:absolute;bottom:16%;width:14%;height:7%;border-radius:50%;background:rgba(255,120,150,.0);transition:background .4s}
.cheek.l{left:14%}.cheek.r{right:14%}
.lcd.happy .cheek{background:rgba(255,120,150,.55);box-shadow:0 0 8px rgba(255,120,150,.6)}
/* annotations */
.anno{position:absolute;inset:6%;pointer-events:none}
.anno svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.anno line{stroke:var(--acc);stroke-width:1;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.pin{position:absolute;width:9px;height:9px;margin:-4.5px 0 0 -4.5px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 3px rgba(255,255,255,.9),0 0 0 4px rgba(232,71,11,.35)}
.pin::after{content:'';position:absolute;inset:-6px;border-radius:50%;border:1px solid var(--acc);animation:pinr 2.6s var(--ease) infinite;opacity:0}
@keyframes pinr{0%{transform:scale(.4);opacity:.8}100%{transform:scale(1.6);opacity:0}}
.lab{position:absolute;font-family:var(--fM);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);line-height:1.5;background:rgba(255,255,255,.78);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:var(--hair) solid var(--line2);border-radius:10px;padding:7px 10px;white-space:nowrap;box-shadow:0 8px 20px -14px rgba(20,21,25,.4)}
.lab b{display:block;font-weight:500;color:var(--ink);letter-spacing:.06em}
.lab-a{left:-6%;top:6%}
.lab-b{right:-8%;top:16%}
.lab-c{left:-2%;bottom:14%}
.js .anno line{stroke-dashoffset:200;transition:stroke-dashoffset 1.6s var(--ease) 1s}
.js .anno.in line{stroke-dashoffset:0}
.js .anno .lab,.js .anno .pin{opacity:0;translate:0 6px;transition:opacity .6s var(--ease),translate .6s var(--ease)}
.js .anno.in .lab,.js .anno.in .pin{opacity:1;translate:0 0}
.js .anno.in .lab-a,.js .anno.in .pin-a{transition-delay:1.1s}
.js .anno.in .lab-b,.js .anno.in .pin-b{transition-delay:1.3s}
.js .anno.in .lab-c,.js .anno.in .pin-c{transition-delay:1.5s}
.stage-hint{position:absolute;right:4%;bottom:2%;font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
@media(max-width:960px){
  .hero-in{grid-template-columns:1fr;gap:28px}
  .stage{max-width:500px}
  .lab-a{left:0}.lab-b{right:0}.lab-c{left:2%}
}
@media(max-width:560px){.anno .lab,.stage-hint{display:none}.hst{padding-right:10px}.hst+.hst{padding-left:12px}}

/* ── marquee ── */
.mq{position:relative;background:var(--acc);color:#fff;overflow:hidden;padding:14px 0;
  background-image:linear-gradient(90deg,var(--acc),#F05A1E 50%,var(--acc))}
.mq::before,.mq::after{content:'';position:absolute;top:0;bottom:0;width:80px;z-index:1;pointer-events:none}
.mq::before{left:0;background:linear-gradient(90deg,var(--acc),rgba(232,71,11,0))}
.mq::after{right:0;background:linear-gradient(-90deg,var(--acc),rgba(232,71,11,0))}
.mq-track{display:flex;width:max-content;animation:mq 44s linear infinite}
.mq:hover .mq-track{animation-play-state:paused}
.mq span{font-family:var(--fM);font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;white-space:nowrap;padding:0 20px;display:inline-block}
.mq i{font-style:normal;opacity:.55;padding:0 6px}
@keyframes mq{to{transform:translateX(-50%)}}

/* ── sections ── */
section{position:relative;padding:clamp(56px,6.4vw,96px) var(--gut)}
.x{max-width:var(--mx);margin:0 auto}
.bg-white{background:var(--surface)}
.bg-tint{background:var(--paper2)}
.sec-h{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:20px 48px;align-items:end;margin-bottom:clamp(40px,5vw,72px)}
.sec-h.one{grid-template-columns:1fr}
.sec-ix{grid-column:1/-1;display:flex;align-items:center;gap:14px;font-family:var(--fM);font-size:12px;letter-spacing:.16em;color:var(--acc-deep)}
.sec-ix::after{content:'';flex:1;height:var(--hair);background:var(--line2)}
.sec-h h2{font-weight:900;font-size:clamp(30px,4.2vw,54px);line-height:1.16;letter-spacing:-.005em}
.sec-h h2 small{display:block;font-family:var(--fD);font-weight:500;font-size:.36em;letter-spacing:.02em;color:var(--mut);margin-top:10px}
.sec-sub{color:var(--mut);font-size:16.5px;max-width:520px;justify-self:end}
.sec-h .sec-act{justify-self:end}
@media(max-width:860px){.sec-h{grid-template-columns:1fr}.sec-sub,.sec-h .sec-act{justify-self:start}}

/* ── figure panel ── */
.fig-panel{position:relative;background:var(--paper);border:var(--hair) solid var(--line);border-radius:var(--r-lg);padding:clamp(20px,3vw,40px);display:flex;align-items:center;justify-content:center;overflow:hidden;isolation:isolate;box-shadow:var(--sh)}
.fig-panel::before{content:'';position:absolute;inset:0;z-index:-1;background-image:radial-gradient(circle,rgba(20,21,25,.08) .8px,transparent 1.3px);background-size:22px 22px;background-position:11px 11px}
.fig-panel::after{content:'';position:absolute;inset:0;z-index:-1;background:radial-gradient(380px circle at var(--mx,50%) var(--my,40%),rgba(255,180,140,.32),transparent 65%);opacity:.0;transition:opacity .4s}
.fig-panel:hover::after{opacity:1}
.fig-panel img{position:relative;width:100%;height:auto}
.fig-cap{position:absolute;left:20px;bottom:14px;font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.fig-cap-r{left:auto;right:20px}
.corner{position:absolute;width:14px;height:14px;border-color:var(--line2);border-style:solid;border-width:0}
.corner.tl{top:12px;left:12px;border-top-width:1px;border-left-width:1px}
.corner.tr{top:12px;right:12px;border-top-width:1px;border-right-width:1px}
.corner.bl{bottom:12px;left:12px;border-bottom-width:1px;border-left-width:1px}
.corner.br{bottom:12px;right:12px;border-bottom-width:1px;border-right-width:1px}

/* ── spec list ── */
.spec{position:relative;display:flex;gap:22px;padding:22px 6px;border-top:var(--hair) solid var(--line);transition:padding-left .4s var(--ease)}
.spec:last-child{border-bottom:var(--hair) solid var(--line)}
.spec::before{content:'';position:absolute;left:0;top:-1px;height:1px;width:0;background:var(--acc);transition:width .6s var(--ease)}
.spec:hover{padding-left:16px}
.spec:hover::before{width:100%}
.spec i{font-style:normal;font-family:var(--fM);font-size:12px;color:var(--acc-deep);letter-spacing:.06em;padding-top:4px;flex-shrink:0;min-width:18px}
.spec h4{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:3px;transition:color .2s}
.spec:hover h4{color:var(--acc-deep)}
.spec p{color:var(--mut);font-size:14.5px;line-height:1.7}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:clamp(32px,5vw,80px);align-items:center}
.split.rev .split-media{order:-1}
.split-media{min-width:0}
@media(max-width:900px){.split{grid-template-columns:1fr}.split.rev .split-media{order:0}}

/* ── product title block ── */
.p-title{font-weight:900;font-size:clamp(30px,3.8vw,48px);line-height:1.18;letter-spacing:-.005em;margin:18px 0 8px}
.p-en{font-family:var(--fM);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:28px}

/* ── segmented switch ── */
.seg{position:relative;display:inline-flex;gap:0;background:var(--paper2);border:var(--hair) solid var(--line2);border-radius:999px;padding:5px;margin-bottom:44px}
.seg-ind{position:absolute;top:5px;bottom:5px;left:0;width:0;border-radius:999px;background:var(--ink);box-shadow:0 8px 18px -8px rgba(20,21,25,.6),inset 0 1px 0 rgba(255,255,255,.12);transition:transform .5s var(--ease),width .5s var(--ease)}
.seg button{position:relative;z-index:1;font-weight:700;font-size:14px;border:none;background:transparent;color:var(--ink2);border-radius:999px;padding:11px 24px;cursor:pointer;transition:color .3s;display:inline-flex;align-items:center;gap:10px}
.seg button small{font-family:var(--fM);font-weight:400;font-size:10px;letter-spacing:.12em;text-transform:uppercase;opacity:.6}
.seg button.active{color:#fff}
.version-content.hidden{display:none}
.version-content.enter .spec,.version-content.enter .fig-panel{animation:rise .7s var(--ease) both}
.version-content.enter .spec:nth-child(2){animation-delay:.04s}.version-content.enter .spec:nth-child(3){animation-delay:.08s}.version-content.enter .spec:nth-child(4){animation-delay:.12s}.version-content.enter .spec:nth-child(5){animation-delay:.16s}.version-content.enter .spec:nth-child(6){animation-delay:.2s}.version-content.enter .spec:nth-child(7){animation-delay:.24s}

/* voice / claw figure overlays */
.fig-bot{position:relative;width:88%;aspect-ratio:1/1;margin:0 auto}
.fig-bot .bot img{filter:drop-shadow(0 26px 30px rgba(60,30,10,.16))}
.bubble{position:absolute;display:flex;align-items:center;gap:10px;font-size:13px;font-weight:500;color:var(--ink);background:#fff;border:var(--hair) solid var(--line);border-radius:16px;padding:10px 14px;box-shadow:var(--sh-h);white-space:nowrap}
.bubble .mono{font-size:10px;color:var(--mut)}
.bubble-a{left:2%;top:8%;border-bottom-left-radius:4px}
.bubble-b{right:2%;bottom:16%;border-bottom-right-radius:4px;background:var(--ink);color:#fff;border-color:var(--ink)}
.bubble-b .mono{color:rgba(255,255,255,.55)}
.wave{display:inline-flex;align-items:center;gap:2.5px;height:16px}
.wave i{display:block;width:2.5px;height:100%;border-radius:2px;background:var(--acc);animation:wave 1s var(--ease-io) infinite;transform-origin:50% 50%}
.wave i:nth-child(2){animation-delay:-.8s}.wave i:nth-child(3){animation-delay:-.6s}.wave i:nth-child(4){animation-delay:-.4s}.wave i:nth-child(5){animation-delay:-.2s}
@keyframes wave{0%,100%{transform:scaleY(.25)}50%{transform:scaleY(1)}}
.typing{display:inline-flex;gap:3px}
.typing i{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.4;animation:typing 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes typing{0%,60%,100%{opacity:.25;transform:none}30%{opacity:1;transform:translateY(-2px)}}
.blueprint{mix-blend-mode:multiply;border-radius:8px}
.scan{position:absolute;left:0;right:0;height:80px;top:0;background:linear-gradient(to bottom,rgba(232,71,11,0),rgba(232,71,11,.05) 80%,rgba(232,71,11,.28) 100%);border-bottom:1px solid var(--acc);animation:scan 4.8s var(--ease-io) infinite;pointer-events:none;mix-blend-mode:multiply}
@keyframes scan{0%{transform:translateY(-80px)}100%{transform:translateY(calc(var(--h,480px) + 10px))}}

/* ── comparison datasheet ── */
.comparison{margin-top:64px;background:var(--surface);border:var(--hair) solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh)}
.comp-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:26px 32px;border-bottom:var(--hair) solid var(--line)}
.comp-head h3{font-weight:900;font-size:20px}
.tbl-wrap{overflow-x:auto}
.comp-tbl{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
.comp-tbl th{font-family:var(--fM);font-weight:500;font-size:11px;letter-spacing:.12em;text-transform:uppercase;text-align:left;padding:14px 32px;background:var(--paper);border-bottom:var(--hair) solid var(--line);color:var(--ink2)}
.comp-tbl th.th-claw{color:var(--acc-deep)}
.comp-tbl td{padding:16px 32px;border-bottom:var(--hair) solid var(--line);vertical-align:top;color:var(--ink2);transition:background .2s}
.comp-tbl tr:last-child td{border-bottom:none}
.comp-tbl td:first-child{font-weight:700;color:var(--ink);white-space:nowrap;width:18%}
.comp-tbl td:nth-child(3){background:rgba(232,71,11,.03)}
.comp-tbl tr:hover td{background:var(--paper)}
.comp-tbl tr:hover td:nth-child(3){background:rgba(232,71,11,.06)}
.comp-cta{display:flex;gap:12px;flex-wrap:wrap;padding:22px 32px;border-top:var(--hair) solid var(--line);background:var(--paper)}

/* ── night section (KitiClaw) ── */
.night{background:var(--night);color:#EDEBE5;overflow:hidden;isolation:isolate}
.night::before{content:'';position:absolute;inset:0;z-index:-1;background:
  radial-gradient(50% 60% at 30% 45%,rgba(255,255,255,.07),transparent 70%),
  radial-gradient(40% 50% at 90% 10%,rgba(232,71,11,.12),transparent 70%)}
.night::after{content:'';position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000,transparent);mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000,transparent)}
.night .sec-ix{color:#FF7A45}
.night .sec-ix::after{background:rgba(255,255,255,.12)}
.night .p-en{color:#8C8E96}
.night .spec{border-color:rgba(255,255,255,.09)}
.night .spec p{color:#9597A0}
.night .spec i{color:#FF7A45}
.night .spec:hover h4{color:#FF8A5B}
.night .pill-acc{background:rgba(232,71,11,.14);border-color:rgba(232,71,11,.45);color:#FF8A5B}
.poster{position:relative;border-radius:var(--r-lg);overflow:hidden;border:var(--hair) solid rgba(255,255,255,.1);box-shadow:0 60px 120px -40px rgba(0,0,0,.8),0 0 0 1px rgba(0,0,0,.4);transform:perspective(1400px) rotateY(var(--ry,0deg)) rotateX(var(--rx,0deg));transition:transform .2s linear;max-width:520px;margin:0 auto}
.poster img{width:100%;height:auto}
.poster::after{content:'';position:absolute;inset:0;background:radial-gradient(500px circle at var(--mx,50%) var(--my,30%),rgba(255,255,255,.12),transparent 50%);mix-blend-mode:screen;pointer-events:none}
.poster-meta{display:flex;justify-content:space-between;margin:16px auto 0;max-width:520px;font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:#6E7079}

/* ── MuseVibe chord pad ── */
.muse-stage{position:relative;border-radius:var(--r-lg);overflow:hidden;isolation:isolate;padding:clamp(72px,8vw,96px) 0 0 clamp(12px,3vw,40px);
  background:radial-gradient(70% 70% at 40% 40%,#FFE2CF 0%,rgba(255,226,207,0) 70%),linear-gradient(180deg,#FFF9F4,var(--paper2));border:var(--hair) solid var(--line)}
.muse-stage::before{content:'';position:absolute;inset:0;z-index:-1;background-image:radial-gradient(circle,rgba(20,21,25,.07) .8px,transparent 1.3px);background-size:22px 22px}
.muse-stage img{width:100%;height:auto;filter:drop-shadow(0 26px 30px rgba(80,40,10,.18))}
.chords{position:absolute;right:20px;top:20px;z-index:2;display:flex;gap:10px;padding:8px;border-radius:18px;background:rgba(255,255,255,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:var(--hair) solid var(--line2);box-shadow:var(--sh-h)}
.chord{width:54px;height:46px;border-radius:12px;border:none;cursor:pointer;font-family:var(--fD);font-weight:700;font-size:15px;color:#5A2A0E;
  background:linear-gradient(160deg,#F2B48C 0%,#D9875A 45%,#B8653A 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.55),inset 0 -2px 0 rgba(0,0,0,.12),0 4px 10px -4px rgba(120,50,10,.5);transition:transform .12s,box-shadow .12s,filter .2s}
.chord:hover{filter:brightness(1.06)}
.chord.hit,.chord:active{transform:translateY(2px) scale(.97);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),inset 0 -1px 0 rgba(0,0,0,.12),0 1px 3px -1px rgba(120,50,10,.5)}
.chords-tip{position:absolute;left:0;right:0;bottom:-24px;text-align:center;font-family:var(--fM);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);white-space:nowrap}
.notes{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.note{position:absolute;font-family:var(--fD);font-weight:700;color:var(--acc);font-size:18px;animation:noteUp 1.6s var(--ease) forwards}
@keyframes noteUp{0%{opacity:0;transform:translateY(0) scale(.6)}20%{opacity:1}100%{opacity:0;transform:translateY(-140px) translateX(var(--dx,0)) scale(1.1) rotate(var(--rot,0deg))}}

/* ── MCP grid ── */
.mg{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;counter-reset:mcix}
.mc{counter-increment:mcix;position:relative;display:block;padding:20px 20px 18px;border-radius:var(--r);border:1px solid transparent;
  background:linear-gradient(var(--surface),var(--surface)) padding-box,radial-gradient(220px circle at var(--mx,-200px) var(--my,-200px),rgba(232,71,11,.75),var(--line) 70%) border-box;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.mc::before{content:counter(mcix,decimal-leading-zero);font-family:var(--fM);font-size:10px;letter-spacing:.14em;color:var(--line2);display:flex;justify-content:space-between;margin-bottom:12px;transition:color .2s}
.mc::after{content:'↗';position:absolute;top:16px;right:18px;font-family:var(--fM);font-size:13px;color:var(--mut);opacity:0;transform:translate(-4px,4px);transition:opacity .3s,transform .4s var(--ease),color .2s}
.mc:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.mc:hover::before{color:var(--acc)}
.mc:hover::after{opacity:1;transform:none;color:var(--acc)}
.mc h4{font-size:15px;font-weight:700;line-height:1.45;margin-bottom:4px}
.mc p{color:var(--mut);font-size:12.5px;line-height:1.6}
.mc.cs{background:transparent;border:1px dashed var(--line2)}
.mc.cs::before{content:'+ +'}
.mc.cs::after{display:none}
.mcp-band{display:flex;gap:28px;flex-wrap:wrap;align-items:center;margin-bottom:28px;padding:18px 22px;border:var(--hair) solid var(--line);border-radius:var(--r);background:var(--paper)}
.mcp-band span{font-family:var(--fM);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}
.mcp-band b{font-family:var(--fD);font-size:22px;color:var(--ink);margin-right:8px;letter-spacing:-.01em}
.mcp-band .live{margin-left:auto;display:inline-flex;align-items:center;gap:8px;color:var(--acc-deep)}

/* ── community ── */
.cg{display:grid;grid-template-columns:1.25fr 1fr;gap:16px}
@media(max-width:820px){.cg{grid-template-columns:1fr}}
.cb{position:relative;background:var(--surface);border:var(--hair) solid var(--line);border-radius:var(--r-lg);padding:clamp(28px,3.4vw,48px);display:flex;flex-direction:column;overflow:hidden;isolation:isolate;transition:box-shadow .4s var(--ease),transform .4s var(--ease)}
.cb:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.cb h3{font-weight:900;font-size:clamp(22px,2.2vw,28px);margin-bottom:12px}
.cb>p{color:var(--mut);font-size:15px;margin-bottom:26px;max-width:460px}
.cb-big{min-height:360px}
.cb-big .bp{position:absolute;right:-8%;bottom:-14%;width:72%;z-index:-1;opacity:.5;mix-blend-mode:multiply;transform:rotate(-4deg);transition:transform .8s var(--ease),opacity .4s;-webkit-mask-image:linear-gradient(120deg,transparent 10%,#000 60%);mask-image:linear-gradient(120deg,transparent 10%,#000 60%)}
.cb-big:hover .bp{transform:rotate(-2deg) scale(1.03);opacity:.7}
.cb-num{display:flex;gap:32px;margin:6px 0 28px}
.cb-num b{display:block;font-family:var(--fD);font-size:32px;line-height:1.1;letter-spacing:-.02em}
.cb-num span{font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.ol{font-family:var(--fD);font-weight:700;font-size:clamp(17px,1.8vw,21px);color:var(--acc-deep);display:inline-flex;align-items:center;gap:10px;margin-top:auto;transition:gap .3s var(--ease)}
.ol:hover{gap:16px}
.cb.qr{text-align:center;align-items:center}
.qr img{width:160px;height:160px;margin:8px auto 14px;border:var(--hair) solid var(--line);border-radius:16px;padding:10px;background:#fff;box-shadow:var(--sh)}
.qr .mono{font-size:11px;color:var(--mut)}

/* ── solutions bento ── */
.gl{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:clamp(150px,17vw,230px);gap:12px}
.gi{position:relative;border-radius:var(--r);overflow:hidden;cursor:zoom-in;background:var(--paper2);border:none;padding:0}
.gi img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),filter .6s}
.gi::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(13,14,17,.55),transparent 45%);opacity:0;transition:opacity .4s}
.gi span{position:absolute;left:16px;bottom:12px;z-index:1;color:#fff;font-family:var(--fM);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;opacity:0;transform:translateY(6px);transition:opacity .4s,transform .4s var(--ease)}
.gi:hover img{transform:scale(1.05)}
.gi:hover::after,.gi:focus-visible::after{opacity:1}
.gi:hover span,.gi:focus-visible span{opacity:1;transform:none}
.gi.big{grid-column:span 2;grid-row:span 2}
.gi.wide{grid-column:span 2}
@media(max-width:860px){.gl{grid-template-columns:repeat(2,1fr)}.gi.big{grid-column:span 2;grid-row:span 2}.gi.wide{grid-column:span 2}}

/* ── news (EN) ── */
.nwg{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.nw{display:flex;flex-direction:column;text-align:left;background:var(--surface);border:var(--hair) solid var(--line);border-radius:var(--r-lg);overflow:hidden;padding:0;cursor:zoom-in;transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
a.nw{cursor:pointer}
.nw:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.nw-ph{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper2)}
.nw-ph img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.nw:hover .nw-ph img{transform:scale(1.05)}
.nw-ph .play{position:absolute;left:14px;bottom:12px;font-family:var(--fM);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#fff;background:rgba(13,14,17,.6);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:999px;padding:6px 12px}
.nw-ph,.nw-tx{display:block}
.nw-tx{padding:18px 20px 20px}
.nw-tx .nh{display:block;font-size:15.5px;font-weight:700;line-height:1.45;margin-bottom:4px;color:var(--ink)}
.nw-tx .np{display:block;font-style:normal;color:var(--mut);font-size:13.5px;line-height:1.6}

/* ── media ── */
.meg{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.meg{grid-template-columns:1fr}}
.mei{position:relative;background:var(--surface);border:var(--hair) solid var(--line);border-radius:var(--r-lg);display:flex;align-items:center;gap:18px;padding:26px 28px;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .2s}
.mei:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(232,71,11,.35)}
.mei::after{content:'→';position:absolute;right:24px;top:50%;margin-top:-11px;font-family:var(--fM);color:var(--mut);transition:transform .35s var(--ease),color .2s}
.mei:hover::after{transform:translateX(4px);color:var(--acc)}
.mei-icon{flex-shrink:0;width:52px;height:52px;border-radius:15px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 6px 14px -6px rgba(20,21,25,.5);transition:background .3s}
.mei:hover .mei-icon{background:var(--acc)}
.mei-body h4{font-size:15.5px;font-weight:700;margin-bottom:3px}
.mei-body p{color:var(--mut);font-size:13.5px}
.mei-body h4{margin-bottom:0}
.meg .mei{padding:30px 28px}

/* ── partners ── */
.pg{display:grid;grid-template-columns:repeat(7,1fr);gap:0;border-top:var(--hair) solid var(--line);border-left:var(--hair) solid var(--line)}
@media(max-width:960px){.pg{grid-template-columns:repeat(4,1fr)}}
@media(max-width:560px){.pg{grid-template-columns:repeat(2,1fr)}}
.pi{position:relative;display:flex;align-items:center;justify-content:center;padding:26px 14px;min-height:96px;border-right:var(--hair) solid var(--line);border-bottom:var(--hair) solid var(--line);transition:background .3s}
.pi img{max-width:74%;max-height:38px;width:auto;height:auto;object-fit:contain;opacity:.5;filter:grayscale(1) contrast(1.1);transition:opacity .35s,filter .35s,transform .5s var(--ease)}
.pi:hover{background:var(--paper)}
.pi:hover img{opacity:1;filter:none;transform:scale(1.05)}

/* ── lightbox ── */
.lb{position:fixed;z-index:2000;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;padding:24px;background:rgba(13,14,17,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);opacity:0;pointer-events:none;transition:opacity .35s}
.lb.show{opacity:1;pointer-events:auto}
.lb img{max-width:min(92vw,1200px);max-height:78vh;object-fit:contain;border-radius:var(--r);box-shadow:0 40px 100px -20px rgba(0,0,0,.6);transform:scale(.96);transition:transform .5s var(--ease)}
.lb.show img{transform:none}
.lb-t{color:rgba(255,255,255,.8);font-family:var(--fM);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase}
.lb-b{position:absolute;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.1);border:var(--hair) solid rgba(255,255,255,.22);color:#fff;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,transform .3s var(--ease)}
.lb-b:hover{background:var(--acc);border-color:var(--acc)}
.lb-x{top:20px;right:24px}
.lb-p{left:24px;top:50%;margin-top:-24px}
.lb-n{right:24px;top:50%;margin-top:-24px}
@media(max-width:640px){.lb-p,.lb-n{top:auto;bottom:24px;margin:0}}

/* ── footer ── */
footer{position:relative;background:var(--night);color:#C9C7C0;padding:clamp(64px,8vw,104px) var(--gut) 32px;overflow:hidden;isolation:isolate}
footer::before{content:'';position:absolute;inset:0;z-index:-1;background:radial-gradient(60% 50% at 80% 0%,rgba(232,71,11,.14),transparent 70%)}
.ft{max-width:var(--mx);margin:0 auto}
.ft-cta{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;padding-bottom:clamp(40px,5vw,64px);border-bottom:var(--hair) solid rgba(255,255,255,.1);margin-bottom:clamp(40px,5vw,64px)}
.ft-cta h3{font-weight:900;font-size:clamp(28px,3.6vw,46px);line-height:1.2;color:#fff;max-width:640px}
.ft-cta h3 em{font-style:normal;color:#FF7A45}
.fc-g{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:clamp(40px,6vw,72px)}
@media(max-width:760px){.fc-g{grid-template-columns:1fr}}
.fc-s h4{font-family:var(--fM);font-weight:500;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#6E7079;margin-bottom:16px}
.fc-s p{margin:7px 0;color:#C9C7C0;font-size:14px}
.fc-s ul{list-style:none}
.fc-s ul li{margin:9px 0}
.fc-s ul li a{color:#C9C7C0;font-size:14px;transition:color .2s}
.fc-s ul li a:hover{color:#fff}
.fc-s a.mail{border-bottom:var(--hair) solid rgba(255,255,255,.25);transition:border-color .2s,color .2s}
.fc-s a.mail:hover{color:#fff;border-color:var(--acc)}
.ft-word{position:relative;font-family:var(--fD);font-weight:700;font-size:clamp(48px,12.4vw,176px);line-height:.9;letter-spacing:-.035em;white-space:nowrap;user-select:none;margin-bottom:28px;text-align:center}
.ft-word .o{color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.16)}
.ft-word .f{position:absolute;inset:0;color:#fff;-webkit-mask-image:radial-gradient(260px circle at var(--fx,-400px) var(--fy,-400px),#000 0%,transparent 70%);mask-image:radial-gradient(260px circle at var(--fx,-400px) var(--fy,-400px),#000 0%,transparent 70%);background:linear-gradient(100deg,#fff 30%,#FF8A5B);-webkit-background-clip:text;background-clip:text;color:transparent}
.ft-word b{color:var(--acc);font-weight:700;-webkit-text-stroke:0}
.ft-b{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding-top:22px;border-top:var(--hair) solid rgba(255,255,255,.1)}
.ft-co,.ft-ic{color:#7D7F87;font-size:12.5px}
.ft-ic a{color:#7D7F87;transition:color .2s}
.ft-ic a:hover{color:#fff}
.ft-mk{font-family:var(--fM);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:#7D7F87}
.ft-mk i{font-style:normal;color:var(--acc)}
@media(max-width:640px){.ft-b{padding-bottom:64px}}
@media print{.js .rv,.js .stg>*{opacity:1!important;animation:none!important}.grain,.hero-gl,.to-top{display:none}}
.to-top{position:fixed;right:22px;bottom:22px;z-index:900;width:46px;height:46px;border-radius:50%;border:var(--hair) solid var(--line2);background:rgba(255,255,255,.8);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--sh-h);opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .3s,transform .4s var(--ease)}
.to-top.on{opacity:1;transform:none;pointer-events:auto}
.to-top svg{position:absolute;inset:-1px;width:46px;height:46px;transform:rotate(-90deg)}
.to-top circle{fill:none;stroke:var(--acc);stroke-width:2;stroke-dasharray:138.2;stroke-dashoffset:calc(138.2 - 138.2 * var(--p,0))}

/* ── reveal system (progressive: only hides when JS is running) ── */
@keyframes rise{from{opacity:0;translate:0 26px}to{opacity:1;translate:0 0}}
@keyframes lineUp{from{transform:translateY(110%)}to{transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.js .rv{opacity:0}
.js .rv.in{animation:rise 1s var(--ease) both;animation-delay:var(--d,0s)}
.js .stg>*{opacity:0}
.js .stg.in>*{animation:rise .8s var(--ease) both;animation-delay:calc(var(--i,0) * 45ms)}
.js .hero-slider .slide .kicker,.js .hero-slider .slide .hero-desc,.js .hero-slider .slide .hero-cta,.js .hero-slider .slide .hero-stats{animation:none;opacity:1}
.js .hero-slider .slide h1 .ln>span{animation:none;transform:none}
.js .hero-slider .slide{animation:none;opacity:1}
.js .hero-slider .stage{animation:none;opacity:1}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js .rv,.js .stg>*{opacity:1}
  .bot-wrap{transform:none}
}

/* ═══ Product 01 — DIY kit storytelling ═══ */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:-28px 0 clamp(48px,6vw,72px)}
.tags .pill{background:transparent}
.tags .pill b{font-weight:500;color:var(--acc-deep);margin-right:2px}

/* build timeline */
.build{position:relative;background:var(--paper);border:var(--hair) solid var(--line);border-radius:var(--r-lg);padding:clamp(28px,4vw,52px);overflow:hidden;isolation:isolate}
.build::before{content:'';position:absolute;inset:0;z-index:-1;background-image:radial-gradient(circle,rgba(20,21,25,.07) .8px,transparent 1.3px);background-size:22px 22px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 40%);mask-image:linear-gradient(90deg,transparent,#000 40%)}
.build-h{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 40px;align-items:end;margin-bottom:clamp(36px,5vw,56px)}
.build-h h3{font-weight:900;font-size:clamp(24px,3vw,38px);line-height:1.2}
.build-h h3 em{font-style:normal;color:var(--acc)}
.build-h p{color:var(--mut);max-width:520px;margin-top:10px}
.big-t{font-family:var(--fD);font-weight:700;font-size:clamp(56px,8vw,112px);line-height:.85;letter-spacing:-.04em;color:var(--ink)}
.big-t small{font-size:.28em;letter-spacing:0;color:var(--mut);margin-left:6px;font-weight:500}
@media(max-width:760px){.build-h{grid-template-columns:1fr}}
.steps{list-style:none;position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps::before,.steps::after{content:'';position:absolute;left:0;right:0;top:9px;height:2px;border-radius:2px;background:var(--line2)}
.steps::after{background:linear-gradient(90deg,var(--acc),#FF8A5B);transform-origin:0 50%;transform:scaleX(0);transition:transform 2.4s var(--ease-io) .3s}
.steps.in::after{transform:scaleX(1)}
.steps li{position:relative;padding-top:38px}
.steps li::before{content:'';position:absolute;top:2px;left:0;width:16px;height:16px;border-radius:50%;background:var(--surface);border:2px solid var(--line2);transition:border-color .4s,background .4s;transition-delay:calc(.3s + var(--i,0) * .6s)}
.steps.in li::before{border-color:var(--acc);background:var(--acc);box-shadow:0 0 0 5px rgba(232,71,11,.14)}
.steps time{display:block;font-family:var(--fM);font-size:12px;letter-spacing:.12em;color:var(--acc-deep);margin-bottom:8px}
.steps b{display:block;font-size:17px;font-weight:700;margin-bottom:4px}
.steps span{display:block;color:var(--mut);font-size:14px;line-height:1.65}
.mini-lcd{display:inline-flex;gap:5px;align-items:center;justify-content:center;width:42px;height:34px;border-radius:7px;background:radial-gradient(120% 90% at 30% 20%,#1b1f27,#050608 70%);margin-top:12px;box-shadow:0 6px 14px -6px rgba(20,21,25,.6)}
.mini-lcd i{width:8px;height:12px;border-radius:3px;background:#E9FBFF;box-shadow:0 0 6px rgba(110,220,255,.8);animation:mblink 4s infinite}
@keyframes mblink{0%,46%,50%,100%{transform:none}48%{transform:scaleY(.1)}}
@media(max-width:860px){
  .steps{grid-template-columns:1fr;gap:0}
  .steps::before,.steps::after{left:7px;right:auto;top:0;bottom:0;width:2px;height:auto}
  .steps::after{transform-origin:50% 0;transform:scaleY(0)}
  .steps.in::after{transform:scaleY(1)}
  .steps li{padding:0 0 26px 36px}
  .steps li::before{top:2px}
}

/* module map */
.mods-h{text-align:center;max-width:720px;margin:clamp(72px,9vw,120px) auto clamp(36px,5vw,56px)}
.mods-h .sec-ix{justify-content:center}
.mods-h .sec-ix::after,.mods-h .sec-ix::before{content:'';flex:0 0 40px;height:var(--hair);background:var(--line2)}
.mods-h h3{font-weight:900;font-size:clamp(28px,3.6vw,46px);line-height:1.18;margin:14px 0 12px}
.mods-h p{color:var(--mut)}
.mods{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr) minmax(0,1fr);gap:14px;align-items:stretch}
.mods-col{display:grid;gap:14px}
.mod{position:relative;display:grid;grid-template-columns:44px 1fr;gap:4px 14px;align-items:center;padding:18px 18px;border-radius:var(--r);background:var(--surface);border:var(--hair) solid var(--line);transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s}
.mod:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(232,71,11,.35)}
.mod svg{grid-row:span 2;width:44px;height:44px;padding:10px;border-radius:12px;background:var(--paper2);color:var(--ink);stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:background .3s,color .3s}
.mod:hover svg{background:var(--acc);color:#fff}
.mod b{font-size:15.5px;font-weight:700;line-height:1.35}
.mod span{font-size:12.5px;color:var(--mut);line-height:1.5}
.mod i{position:absolute;top:12px;right:14px;font-style:normal;font-family:var(--fM);font-size:9.5px;letter-spacing:.14em;color:var(--line2)}
.mods-fig{position:relative;border-radius:var(--r-lg);background:radial-gradient(70% 60% at 50% 45%,#FFE7D6 0%,rgba(255,231,214,0) 70%),var(--paper);border:var(--hair) solid var(--line);overflow:hidden;isolation:isolate;min-height:420px;display:flex;align-items:center;justify-content:center}
.mods-fig::before{content:'';position:absolute;inset:0;z-index:-1;background-image:radial-gradient(circle,rgba(20,21,25,.08) .8px,transparent 1.3px);background-size:22px 22px}
.mods-fig .fig-bot{width:84%}
.mods-fig .bubble-a{top:6%;left:4%}
.mods-fig .bubble-b{bottom:9%;right:4%}
@media(max-width:960px){
  .mods{grid-template-columns:1fr 1fr}
  .mods-fig{grid-column:1/-1;order:-1;min-height:0;aspect-ratio:1/1;max-height:560px}
}
@media(max-width:520px){.mods{grid-template-columns:1fr}.mod{padding:16px}}

/* open ecosystem */
.eco{margin-top:clamp(72px,9vw,120px);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:clamp(28px,4vw,56px);align-items:start}
.eco-intro{position:sticky;top:110px}
.eco-intro h3{font-weight:900;font-size:clamp(28px,3.4vw,44px);line-height:1.18;margin:14px 0 14px}
.eco-intro h3 em{font-style:normal;color:var(--acc)}
.eco-intro p{color:var(--mut);margin-bottom:26px}
.eco-stats{display:flex;gap:28px;padding-top:22px;border-top:var(--hair) solid var(--line2)}
.eco-stats b{display:block;font-family:var(--fD);font-size:clamp(26px,2.6vw,34px);line-height:1.1;letter-spacing:-.02em}
.eco-stats span{font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.eco-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.eco-c{position:relative;padding:clamp(22px,2.6vw,32px);border-radius:var(--r-lg);background:var(--surface);border:var(--hair) solid var(--line);overflow:hidden;isolation:isolate;min-height:220px;display:flex;flex-direction:column;transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.eco-c:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.eco-c .no{font-family:var(--fD);font-weight:700;font-size:52px;line-height:1;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px var(--line2);margin-bottom:auto;transition:-webkit-text-stroke-color .3s,color .3s}
.eco-c:hover .no{color:var(--acc);-webkit-text-stroke-color:var(--acc)}
.eco-c h4{font-size:18px;font-weight:900;margin:22px 0 6px}
.eco-c p{color:var(--mut);font-size:14px;line-height:1.7}
.eco-c .mono{position:absolute;top:22px;right:22px;font-size:10px;color:var(--mut)}
.eco-c.dark{background:var(--night);border-color:var(--night);color:#EDEBE5}
.eco-c.dark p{color:#9597A0}
.eco-c.dark .no{-webkit-text-stroke-color:rgba(255,255,255,.2)}
.eco-c.dark .mono{color:#6E7079}
.eco-c .bp-bg{position:absolute;right:-20%;bottom:-30%;width:90%;z-index:-1;opacity:.12;filter:invert(1);mix-blend-mode:screen}
@media(max-width:900px){.eco{grid-template-columns:1fr}.eco-intro{position:static}}
@media(max-width:560px){.eco-grid{grid-template-columns:1fr}}

/* firmware entry cards */
.fw{margin-top:clamp(56px,7vw,88px);border-radius:var(--r-lg);border:var(--hair) solid var(--line);background:var(--paper);overflow:hidden}
.fw-h{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:22px 28px;border-bottom:var(--hair) solid var(--line)}
.fw-h h4{font-size:17px;font-weight:900}
.fw-h p{font-size:13.5px;color:var(--mut)}
.fw-g{display:grid;grid-template-columns:1fr 1fr}
.fw-c{position:relative;display:flex;flex-direction:column;gap:6px;padding:26px 28px;transition:background .3s}
.fw-c+.fw-c{border-left:var(--hair) solid var(--line)}
.fw-c:hover{background:var(--surface)}
.fw-c .mono{font-size:10.5px;color:var(--acc-deep)}
.fw-c b{font-size:19px;font-weight:900}
.fw-c span{color:var(--mut);font-size:14px}
.fw-c::after{content:'→';position:absolute;right:28px;top:50%;margin-top:-12px;font-family:var(--fM);font-size:18px;color:var(--mut);transition:transform .35s var(--ease),color .2s}
.fw-c:hover::after{transform:translateX(5px);color:var(--acc)}
@media(max-width:700px){.fw-g{grid-template-columns:1fr}.fw-c+.fw-c{border-left:none;border-top:var(--hair) solid var(--line)}}

/* ── advanced step after the build timeline ── */
.next{position:relative;margin-top:28px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:18px 40px;align-items:center;padding:clamp(22px,3vw,30px);border-radius:var(--r);border:1px dashed var(--line2);background:var(--surface)}
.next-h{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.next-h .mono{font-size:10.5px;letter-spacing:.14em;color:var(--acc-deep);padding:5px 10px;border-radius:999px;background:var(--acc-soft);border:var(--hair) solid rgba(232,71,11,.3)}
.next-h b{font-size:17px;font-weight:900}
.next p{color:var(--mut);font-size:14px;line-height:1.7;margin-top:4px}
.next-lists{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.next-lists span{display:block;font-family:var(--fM);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:7px}
.next-lists em{font-style:normal;display:inline-block;font-size:13px;color:var(--ink2);border:var(--hair) solid var(--line2);border-radius:999px;padding:4px 10px;margin:0 4px 6px 0;background:var(--paper);white-space:nowrap}
@media(max-width:760px){.next{grid-template-columns:1fr}.next-lists{grid-template-columns:1fr}}

/* skip link — visually hidden; appears only for keyboard users (Tab) */
.skip{position:fixed;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;background:var(--ink);color:#fff;font-size:14px;font-weight:700;padding:10px 16px;border-radius:10px}
.skip:focus{left:16px;top:12px;width:auto;height:auto;overflow:visible;z-index:4000}

/* ═══ Social channels — 5 cards, click to jump, scan to follow ═══ */
.soc{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
@media(max-width:1100px){.soc{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.soc{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.soc{grid-template-columns:1fr}.soc-qr{height:300px}}
.soc-c{position:relative;display:flex;flex-direction:column;background:var(--surface);border:var(--hair) solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s}
.soc-c:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(232,71,11,.35)}
.soc-qr{position:relative;display:flex;align-items:center;justify-content:center;background:#fff;overflow:hidden;border:none;padding:10px;cursor:zoom-in;height:230px}
.soc-qr img{width:100%;height:100%;object-fit:contain;transition:transform .9s var(--ease)}
.soc-c:hover .soc-qr img{transform:scale(1.03)}
.soc-qr::after{content:'点击放大 ↗';position:absolute;right:10px;bottom:10px;font-family:var(--fM);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:#fff;background:rgba(20,21,25,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border-radius:999px;padding:5px 10px;opacity:0;transform:translateY(4px);transition:opacity .3s,transform .3s var(--ease)}
.soc-c:hover .soc-qr::after{opacity:1;transform:none}
.soc-b{display:flex;align-items:center;gap:12px;padding:16px 18px;flex:1}
.soc-ic{flex-shrink:0;width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:var(--ink);color:#fff;transition:background .3s}
.soc-c:hover .soc-ic{background:var(--acc)}
.soc-tx{min-width:0;flex:1 1 auto;overflow:hidden}
.soc-tx b{display:block;font-size:15px;font-weight:700;line-height:1.3}
.soc-tx span{display:block;font-family:var(--fM);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--mut);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.soc-go{position:absolute;right:16px;top:16px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.86);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);box-shadow:0 4px 10px -4px rgba(20,21,25,.4);font-family:var(--fM);font-size:13px;color:var(--ink);opacity:0;transform:translate(-4px,4px);transition:opacity .3s,transform .35s var(--ease),background .2s,color .2s}
.soc-c:hover .soc-go{opacity:1;transform:none}
.soc-go:hover{background:var(--acc);color:#fff}

/* ═══ Flashduck ═══ */
.fd-parts{margin-top:clamp(48px,6vw,72px);display:grid;gap:clamp(24px,3vw,36px)}
.fd-parts-h{max-width:640px}
.fd-parts-h h3{font-weight:900;font-size:clamp(24px,2.8vw,34px);line-height:1.2;margin:14px 0 10px}
.fd-parts-h p{color:var(--mut);font-size:15px}
.fd-parts img{width:100%;height:auto;border-radius:var(--r-lg);border:var(--hair) solid var(--line);background:#fff}

/* ═══ Nav dropdown (hover on desktop, tap on mobile menu) ═══ */
.has-drop{position:relative}
.has-drop>a::before{content:'';display:inline-block;width:5px;height:5px;margin:0 6px 2px 0;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);opacity:.5;transition:transform .3s var(--ease),opacity .2s}
.has-drop:hover>a::before,.has-drop:focus-within>a::before{transform:rotate(225deg) translate(-1px,-1px);opacity:1}
.drop{position:absolute;left:50%;top:100%;transform:translate(-50%,8px);padding-top:14px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s var(--ease),transform .35s var(--ease),visibility .25s;z-index:1100}
.has-drop:hover .drop,.has-drop:focus-within .drop{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.drop-in{position:relative;width:min(680px,calc(100vw - 40px));padding:20px;border-radius:22px;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.6) blur(20px);-webkit-backdrop-filter:saturate(1.6) blur(20px);border:var(--hair) solid var(--line);box-shadow:0 30px 80px -30px rgba(20,21,25,.35),0 2px 8px rgba(20,21,25,.05)}
.drop-in::before{content:'';position:absolute;left:50%;top:-6px;width:12px;height:12px;margin-left:-6px;transform:rotate(45deg);background:#fff;border-left:var(--hair) solid var(--line);border-top:var(--hair) solid var(--line);border-radius:2px}
.drop-t{display:block;font-family:var(--fM);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mut);margin:2px 0 14px 4px}
.drop-g{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.drop-c{display:flex;align-items:center;gap:14px;padding:10px;border-radius:14px;min-width:0;overflow:hidden;transition:background .2s,transform .3s var(--ease)}
.drop-c:hover{background:var(--paper2);transform:translateX(2px)}
.drop-th{flex:0 0 62px;width:62px;height:62px;border-radius:11px;overflow:hidden;background:var(--paper);border:var(--hair) solid var(--line);display:flex;align-items:center;justify-content:center}
.drop-th img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.drop-c:hover .drop-th img{transform:scale(1.06)}
.drop-tx{min-width:0;flex:1 1 auto;overflow:hidden}
.drop-tx b{display:block;font-size:15px;font-weight:700;line-height:1.3;margin-bottom:2px;white-space:normal;overflow-wrap:anywhere}
.drop-tx i{display:block;font-style:normal;font-size:12px;color:var(--mut);line-height:1.45;white-space:normal;overflow-wrap:anywhere}
@media(max-width:1020px){
  .nav.open .drop{position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;padding:6px 0 0}
  .nav:not(.open) .drop{visibility:hidden !important;pointer-events:none !important;height:0;overflow:hidden;opacity:0}
  .has-drop:hover .drop,.has-drop:focus-within .drop{transform:none}
  .drop-in{width:auto;padding:10px;border-radius:14px;box-shadow:none;background:var(--paper);border:none}
  .drop-in::before{display:none}
  .drop-g{grid-template-columns:1fr}
  .drop-th{width:44px;height:44px;border-radius:9px}
  .drop-t{display:none}
  .has-drop>a::before{float:right;margin:6px 4px 0 0;transform:rotate(45deg)}
}
.fd-fig{aspect-ratio:4/4.2;display:flex;align-items:center;justify-content:center}
.fd-fig img{width:100%;height:100%;object-fit:contain}
@media(max-width:900px){.fd-fig{aspect-ratio:1/1}}

/* ═══ Flashduck home band (compact) ═══ */
.fd-band{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
@media(max-width:900px){.fd-band{grid-template-columns:1fr}}
.fd-band-fig{position:relative;border-radius:var(--r-lg);background:#fff;border:var(--hair) solid var(--line);padding:clamp(14px,2vw,22px);box-shadow:var(--sh)}
.fd-band-fig img{width:100%;height:auto;border-radius:8px}
.fd-band-tx h2{font-weight:900;font-size:clamp(26px,3.2vw,42px);line-height:1.15;margin:14px 0 12px}
.fd-band-tx h2 small{display:block;font-family:var(--fD);font-weight:500;font-size:.36em;color:var(--mut);margin-top:8px}
.fd-band-tx p{color:var(--mut);font-size:16px;line-height:1.8;max-width:480px}
.fd-facts{display:flex;gap:26px;margin-top:24px;padding-top:20px;border-top:var(--hair) solid var(--line2)}
.fd-facts span{font-family:var(--fM);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}
.fd-facts b{display:block;font-family:var(--fD);font-size:26px;letter-spacing:-.02em;color:var(--ink);margin-bottom:2px}
.fd-band-video{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:8px;background:#050505}

/* ═══ Flashduck — full-bleed video band (home) ═══ */
.fd-home-band .fd-home-in{display:block;width:100%}
.fd-home-band .fd-home-in .fd-home-tx{width:560px;max-width:560px;flex:none}
.fd-home-band{position:relative;overflow:hidden;isolation:isolate;padding:clamp(64px,8vw,112px) var(--gut);background:#050505}
.fd-home-band::before{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#050505 0%,#050505 32%,rgba(5,5,5,.96) 40%,rgba(5,5,5,.6) 47%,rgba(5,5,5,0) 58%)}
.fd-home-bg{position:absolute;top:0;right:0;bottom:0;left:33.333%;width:66.667%;height:100%;object-fit:cover;object-position:center;z-index:-2}
.fd-home-in{position:relative;max-width:var(--mx);margin:0 auto}
.fd-home-tx{max-width:560px;color:#F5EFE3}
.fd-home-tx .sec-ix{color:#FF8A5B}
.fd-home-tx .sec-ix::after{background:rgba(255,255,255,.14)}
.fd-home-tx h2{font-weight:900;font-size:clamp(28px,3.4vw,44px);line-height:1.12;color:#FFF8EC;margin:14px 0 0;text-shadow:0 2px 20px rgba(0,0,0,.85)}
.fd-home-tx h2 small{display:block;font-family:var(--fD);font-weight:500;font-size:.34em;color:#9C9488;margin-top:10px}
.fd-home-tx p{color:#C6BFB2;font-size:16px;line-height:1.85;margin-top:18px;text-shadow:0 1px 12px rgba(0,0,0,.9)}
.fd-home-tx .fd-facts{border-top-color:rgba(245,239,227,.16)}
.fd-home-tx .fd-facts b{color:#FFF8EC}
.fd-home-tx .fd-facts span{color:#8F887C}
.fd-home-btn{background:rgba(255,255,255,.06);color:#F5EFE3;border-color:rgba(255,255,255,.26)}
.fd-home-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55)}
.fd-home-link{display:inline-flex;align-items:center;gap:8px;font-family:var(--fM);font-size:12px;letter-spacing:.04em;color:#FF9B6A;border-bottom:1px solid rgba(255,155,106,.4);padding-bottom:2px;transition:color .2s,border-color .2s}
.fd-home-link:hover{color:#FFC09B;border-color:rgba(255,192,155,.8)}
@media(max-width:820px){
  .fd-home-band::before{background:linear-gradient(180deg,rgba(5,5,5,.9) 0%,rgba(5,5,5,.72) 45%,rgba(5,5,5,.9) 100%)}
  .fd-home-tx{max-width:none}
}
@media(max-width:820px){
  .fd-home-band{padding-bottom:0}
  .fd-home-bg{position:relative;left:auto;width:100%;height:auto;aspect-ratio:16/9;margin-top:28px;object-fit:cover}
  .fd-home-band::before{display:none}
  .fd-home-band{background:#050505}
}
.fd-key{display:block;color:#FFF8EC;font-weight:700;font-size:1.06em;line-height:1.65;margin-bottom:10px;text-shadow:0 2px 16px rgba(0,0,0,.9)}

/* ═══ Flashduck — 3-step flow ═══ */
.fd-flow{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:9px;max-width:560px}
.fd-flow li{display:block}
.fd-flow-a{position:relative;display:flex;align-items:center;gap:16px;padding:13px 18px 13px 14px;border-radius:18px;
  background:linear-gradient(135deg,rgba(255,255,255,.15) 0%,rgba(255,255,255,.05) 58%,rgba(255,255,255,.085) 100%);
  border:none;backdrop-filter:blur(18px) saturate(1.75);-webkit-backdrop-filter:blur(18px) saturate(1.75);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 10px 26px -18px rgba(0,0,0,.85);
  transition:background .3s,border-color .3s,transform .35s var(--ease),box-shadow .35s}
.fd-flow-n{flex:0 0 auto;font-family:var(--fD);font-weight:700;font-size:26px;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1px rgba(255,155,106,.75);transition:color .3s,-webkit-text-stroke-color .3s;min-width:38px}
.fd-flow-t{flex:1 1 auto;min-width:0;font-size:15.5px;font-weight:700;color:#FFF8EC;line-height:1.35;letter-spacing:.01em}
.fd-flow-go{flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--fM);font-size:12px;
  color:#FF9B6A;background:rgba(255,255,255,.1);border:none;
  transition:background .3s,color .3s,transform .3s var(--ease)}
.fd-flow-a:hover{background:linear-gradient(135deg,rgba(255,255,255,.26) 0%,rgba(255,150,100,.18) 60%,rgba(255,255,255,.14) 100%);transform:translateX(5px);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 16px 34px -18px rgba(255,106,42,.55)}
.fd-flow-a:hover .fd-flow-n{color:#FF6A2A;-webkit-text-stroke-color:#FF6A2A}
.fd-flow-a:hover .fd-flow-go{background:#FF6A2A;color:#1A0A03;transform:rotate(-8deg)}
@media(max-width:820px){.fd-flow{max-width:none}.fd-flow-n{font-size:22px;min-width:32px}.fd-flow-t{font-size:14.5px}}
.fd-pitch{color:#E4DED2;font-size:16.5px;line-height:1.8;margin:0 0 14px;max-width:520px;text-shadow:0 1px 14px rgba(0,0,0,.85)}
.fd-pitch::before{content:'';display:block;width:22px;height:2px;background:#FF6A2A;border-radius:2px;margin-bottom:12px}
@media(max-width:820px){.fd-pitch{font-size:15.5px}}

/* ═══════════════════════════════════════════════════════
   HERO SLIDER — stacked slides, cross-slide, swipeable
   ═══════════════════════════════════════════════════════ */
.hero-slider{position:relative;padding:0;overflow:hidden;background:#050505;
  min-height:min(86vh,840px);height:min(86vh,840px)}
.hero-slider .hero-gl,.hero-slider .hero-dots,.hero-slider .hero-dots-hi{display:none}
.slide-track{position:relative;z-index:1;display:flex;height:100%;
  transition:transform .85s cubic-bezier(.22,1,.36,1);will-change:transform}
.slide{position:relative;flex:0 0 100%;width:100%;height:100%;display:flex;align-items:center;
  padding:clamp(40px,5vw,72px) var(--gut) clamp(64px,7vw,88px);
  overflow:hidden;isolation:isolate}
.slide{visibility:visible}
.slide:not(.is-active){pointer-events:none}
.slide .hero-in{position:relative;z-index:1;width:100%}

/* slide 1 — Flashduck */
.slide-fd{background:#050505}
.fd-slide-bg{position:absolute;top:0;right:0;bottom:0;left:33.333%;width:66.667%;height:100%;object-fit:cover;z-index:-3}
.slide-scrim{position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,#050505 0%,#050505 30%,rgba(5,5,5,.96) 38%,rgba(5,5,5,.62) 46%,rgba(5,5,5,0) 58%)}
.slide-copy{max-width:600px;color:#F5EFE3}
.slide-fd .kicker{color:#C9C1B4;border-color:rgba(245,239,227,.18);background:rgba(255,255,255,.04)}
.slide-fd .kicker b{color:#FF8A5B}
.hero-slider .slide-h1{font-weight:900;font-size:clamp(26px,3.2vw,40px);line-height:1.15;letter-spacing:.01em;color:#FFF8EC;margin-bottom:14px;text-shadow:0 2px 20px rgba(0,0,0,.85)}
.slide-en{display:block;font-family:var(--fD);font-weight:500;font-size:.36em;letter-spacing:.01em;color:#9C9488;margin-top:10px}
.slide-fd .hero-desc{color:#C6BFB2}
.fd-key-line{color:#A8A093;font-size:15.5px;line-height:1.8;max-width:540px;margin:0 0 28px;padding-left:14px;border-left:2px solid rgba(255,106,42,.6)}
.fd-key-line b{color:#FFF8EC;display:inline}
.slide-fd .hero-cta{margin-bottom:30px}
.slide-fd .fd-facts{border-top:1px solid rgba(245,239,227,.16);padding-top:18px;max-width:480px}
.slide-fd .fd-facts b{color:#FFF8EC}
.slide-fd .fd-facts span{color:#8F887C}
.slide-fd .btn-o{background:rgba(255,255,255,.08);color:#FFF8EC;border-color:rgba(245,239,227,.3);backdrop-filter:blur(10px)}
.slide-fd .btn-o:hover{background:rgba(255,255,255,.16);border-color:#FFF8EC}

/* slide 2 — Bot 1 keeps the light theme */
.slide-bot{background:radial-gradient(60% 70% at 72% 40%,#FFE4D1 0%,rgba(255,228,209,0) 70%),var(--paper)}
.slide-bot::before{content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:radial-gradient(circle,rgba(20,21,25,.11) .8px,transparent 1.3px);background-size:26px 26px;background-position:13px 13px;
  -webkit-mask-image:radial-gradient(ellipse 85% 75% at 62% 40%,#000 25%,transparent 100%);mask-image:radial-gradient(ellipse 85% 75% at 62% 40%,#000 25%,transparent 100%)}

/* arrows */
.slide-arrow{position:absolute;top:50%;margin-top:-22px;z-index:20;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  font-family:var(--fM);font-size:15px;color:#F5EFE3;
  background:rgba(20,20,20,.5);border:1px solid rgba(245,239,227,.24);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  opacity:0;transition:opacity .3s,background .2s,transform .3s var(--ease)}
.slide-arrow.prev{left:clamp(8px,1.6vw,20px)}
.slide-arrow.next{right:clamp(8px,1.6vw,20px)}
.hero-slider:hover .slide-arrow,.slide-arrow:focus-visible{opacity:1}
.slide-arrow:hover{background:var(--acc);border-color:var(--acc);transform:scale(1.06)}

/* dots + progress */
.slide-dots{position:absolute;left:50%;bottom:clamp(16px,2.2vw,26px);transform:translateX(-50%);z-index:20;
  display:flex;gap:10px;padding:7px 12px;border-radius:999px;
  background:rgba(15,15,15,.45);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.slide-dot{position:relative;width:34px;height:4px;padding:0;border:none;background:rgba(255,255,255,.26);border-radius:999px;cursor:pointer;overflow:hidden;transition:width .4s var(--ease),background .3s}
.slide-dot span{position:absolute;inset:0;background:#FF6A2A;transform-origin:0 50%;transform:scaleX(0)}
.slide-dot.is-active{width:64px}
.slide-dot.is-active span{animation:slideProg 7s linear forwards}
.slide-dot:hover{background:rgba(255,255,255,.42)}
@keyframes slideProg{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.hero-slider.paused .slide-dot.is-active span{animation-play-state:paused}

@media(max-width:900px){
  .hero-slider{min-height:0;height:auto}
  .slide-track{height:auto}
  .slide{height:auto;min-height:0;padding:clamp(28px,5vw,44px) var(--gut) clamp(56px,8vw,76px)}
  .slide:not(.is-active){display:none}
  .slide-fd{display:block}
  .slide-arrow{display:none}
  .slide-dots{bottom:12px}
}
@media (prefers-reduced-motion:reduce){
  .slide-track{transition:none}
  .slide-dot.is-active span{animation:none;transform:scaleX(1)}
}

/* slide 1 : quiet tag row replaces the oversized number block */
.fd-slide-tags{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.fd-slide-tags span{font-family:var(--fM);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:#B4AC9F;
  border:1px solid rgba(245,239,227,.2);border-radius:999px;padding:6px 12px;background:rgba(255,255,255,.04);white-space:nowrap}

/* hero slide 1 — three numbered steps side by side */
.fd-flow-hero{display:flex;flex-wrap:wrap;gap:9px;margin:26px 0 0;max-width:none}
.fd-flow-hero li{display:block;flex:1 1 0;min-width:150px}
.fd-flow-hero .fd-flow-a{padding:13px 15px;gap:11px;border-radius:14px;height:100%}
.fd-flow-hero .fd-flow-n{font-size:19px;min-width:auto;-webkit-text-stroke:1px rgba(255,155,106,.8)}
.fd-flow-hero .fd-flow-t{font-size:14px;line-height:1.3}
.fd-flow-hero .fd-flow-go{width:24px;height:24px;font-size:11px}
@media(max-width:1100px){.fd-flow-hero li{flex:1 1 100%;min-width:0}}
@media(max-width:900px){.fd-flow-hero{margin-top:22px}}

/* hero slide 1 title — two-line lockup */
.hero-slider .slide-h1{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.hero-slider .sh-brand{font-family:var(--fZ);font-weight:700;font-size:clamp(15px,1.55vw,19px);letter-spacing:.34em;color:#FF9B6A;text-transform:none;line-height:1.4;text-shadow:none}
.hero-slider .sh-name{font-family:var(--fD);font-weight:700;font-size:clamp(34px,4.6vw,62px);line-height:1.04;letter-spacing:-.025em;color:#FFF8EC;text-shadow:0 6px 30px rgba(0,0,0,.55)}
.hero-slider .sh-name em{font-style:normal;color:#FF6A2A;font-weight:700;opacity:1}
.hero-slider .slide-en{margin-top:8px}
@media(max-width:900px){
  .hero-slider .sh-brand{font-size:13px;letter-spacing:.3em}
  .hero-slider .sh-name{font-size:clamp(30px,8vw,44px)}
}

/* slide 3 — Shanmao 01 film */
.slide-bot1{background:#05070b}
.b1-slide-bg{position:absolute;top:0;right:0;bottom:0;left:42%;width:58%;height:100%;object-fit:cover;object-position:50% 50%;z-index:-3}
.slide-bot1 .kicker{color:#C9C1B4;border-color:rgba(245,239,227,.18);background:rgba(255,255,255,.04)}
.slide-bot1 .kicker b{color:#5BC8FF}
.slide-bot1 .sh-brand{color:#5BC8FF}
.slide-bot1 .sh-name em{color:#5BC8FF}
.slide-bot1 .hero-desc{color:#C6BFB2}
.slide-bot1 .fd-key-line{border-left-color:rgba(91,200,255,.6)}
.slide-bot1 .fd-key-line b{color:#EAF7FF}
.slide-bot1 .slide-scrim{background:linear-gradient(90deg,#05070b 0%,#05070b 36%,rgba(5,7,11,.94) 44%,rgba(5,7,11,.5) 52%,rgba(5,7,11,0) 64%)}
.hero-slider .sh-name-cn{font-family:var(--fZ);font-weight:900;letter-spacing:.01em}
.hero-slider .slide-bot1 .sh-name-cn em{font-family:var(--fD);font-weight:700;letter-spacing:-.01em}

/* topic chips (plain hashtag row) */
.tagchip{font-family:var(--fM);font-size:11px;letter-spacing:.08em;color:var(--mut);padding:5px 11px;border-radius:999px;background:var(--paper2);border:var(--hair) solid var(--line)}
.hero-tags-topics{margin-top:16px;gap:7px}
.soc-b{width:100%;border:none;background:transparent;text-align:left;cursor:pointer;font:inherit;color:inherit}
.soc-b:hover .soc-ic{background:var(--acc)}

/* Bilibili card — proper brand card instead of a flat colour block */
.soc-qr-bili{background:linear-gradient(160deg,#FF8FB4 0%,#FB7299 42%,#E84A76 100%);padding:0;display:flex;align-items:center;justify-content:center}
.bili-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;height:100%;padding:18px 16px;text-align:center;color:#fff}
.bili-card svg{filter:drop-shadow(0 4px 10px rgba(0,0,0,.18));margin-bottom:2px}
.bili-t{font-family:var(--fD);font-weight:700;font-size:17px;letter-spacing:.02em;line-height:1.1}
.bili-s{font-family:var(--fZ);font-size:11px;opacity:.9;letter-spacing:.02em}
.bili-btn{margin-top:10px;font-family:var(--fZ);font-size:12px;font-weight:700;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.92);color:#E84A76;transition:transform .25s var(--ease),background .2s}
.soc-qr-bili:hover .bili-btn{background:#fff;transform:translateY(-1px)}

/* disabled "coming soon" step */
.fd-flow-a.is-soon{cursor:default;opacity:.62}
.fd-flow-a.is-soon:hover{transform:none;background:linear-gradient(135deg,rgba(255,255,255,.15) 0%,rgba(255,255,255,.05) 58%,rgba(255,255,255,.085) 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 10px 26px -18px rgba(0,0,0,.85)}
.fd-flow-a.is-soon:hover .fd-flow-go{background:rgba(255,255,255,.1);color:#FF9B6A;transform:none}
.soon-tag{display:inline-block;margin-left:8px;font-family:var(--fM);font-size:9.5px;letter-spacing:.1em;padding:2px 7px;border-radius:999px;border:1px solid rgba(255,155,106,.45);color:#FF9B6A;vertical-align:1px;font-weight:400}

/* ═══════════════════════════════════════════════════════
   MOBILE PASS — phone-first tuning
   ═══════════════════════════════════════════════════════ */
@media(max-width:640px){
  :root{--gut:18px}

  /* header: tighter, logo smaller */
  .nav{height:58px;gap:10px;padding:0 16px}
  header.sc .nav{height:54px}
  .logo-tile{width:34px;height:34px}
  .brand-t1{font-size:14px}
  .brand-t2{font-size:8px;letter-spacing:.18em}
  .nav-right{gap:8px}
  .lang{font-size:11px}
  .lang a{padding:3px 8px}
  .ntg{width:36px;height:36px}

  /* hero slider: stack video under the copy, full-bleed */
  .hero-slider{min-height:0 !important;height:auto !important;padding-bottom:0}
  .hero-slider .slide-track{height:auto !important}
  .slide{display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;
    padding:24px 18px 22px;height:auto;min-height:0}
  .slide .hero-in{position:relative;z-index:1;width:100%;display:flex;flex-direction:column}
  .slide-bot .hero-in{display:block;position:relative;z-index:3}
  .slide-bot .hero-copy{position:relative;z-index:4}
  .slide-bot::after{content:'';position:absolute;inset:0;z-index:2;pointer-events:none;
    background:
      linear-gradient(180deg,rgba(250,249,245,.90) 0%,rgba(250,249,245,.82) 32%,rgba(250,249,245,.55) 58%,rgba(250,249,245,.80) 82%,rgba(250,249,245,.94) 100%)}
  /* full-bleed background video, same as desktop */
  /* video sits behind the copy as a full-bleed background */
  .fd-slide-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 50%;z-index:-3;border-radius:0;margin:0}
  /* SHANMAO 01 film is 16:9 — show all of it, letterboxed on black */
  .b1-slide-bg{position:absolute;left:0;right:0;top:0;bottom:auto;transform:none;
    width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;object-position:50% 50%;
    margin:0;border-radius:0;z-index:-3;background:#05070b;opacity:.9}
  .slide-scrim{display:block !important;position:absolute;inset:0;z-index:-2;
    background:linear-gradient(180deg,
      rgba(5,5,5,.20) 0%,
      rgba(5,5,5,.30) 22%,
      rgba(5,5,5,.72) 40%,
      rgba(5,5,5,.88) 58%,
      #050505 72%,
      #050505 100%)}
  .slide-arrow{display:none}

  .slide-copy{max-width:none}
  /* the Bot 1 slide: keep the robot stage compact so the slide stays short */
  .hero-slider .stage{position:absolute;inset:0;max-width:none;width:100%;height:100%;margin:0;
    aspect-ratio:auto;opacity:.62;z-index:0;pointer-events:none;isolation:auto}
  .hero-slider .stage img{width:100%;height:100%;object-fit:cover;object-position:60% 55%}
  .hero-slider .stage .tick,.hero-slider .stage-hint,.hero-slider .anno,
  .hero-slider .stage .stage-frame,.hero-slider .stage .bot-shadow{display:none}
  .hero-slider .stage .bot-float,.hero-slider .stage .bot-wrap{position:absolute;inset:0;animation:none;transform:none}
  .hero-slider .hero-stats{margin-top:10px}
  .hero-slider .hst b{font-size:20px}
  .hero-slider .hero-cta{margin-bottom:14px;gap:9px}
  .hero-slider .hero-cta .btn{padding:11px 20px;font-size:14px}
  .hero-slider .hst{padding:12px 10px 0 0}
  .hero-slider .hst b{font-size:20px}
  .hero-slider .hst span{font-size:9px;letter-spacing:.06em}
  .hero-slider .sh-brand{font-size:11.5px;letter-spacing:.28em}
  .hero-slider .sh-name{font-size:28px;line-height:1.08}
  .hero-slider .slide-en{font-size:11.5px;margin-top:6px}
  .kicker{font-size:10px;padding:6px 11px;margin-bottom:14px}
  .hero-desc{font-size:14px;line-height:1.7;margin-bottom:12px}
  .fd-key-line{font-size:13px;line-height:1.68;padding-left:11px;margin-bottom:0}

  /* three numbered steps: compact rows */
  .fd-flow-hero{margin-top:16px;gap:7px}
  .fd-flow-hero li{flex:0 1 auto;min-width:0}
  .fd-flow-hero{display:flex;flex-wrap:wrap;gap:8px}
  .fd-flow-hero .fd-flow-a{padding:8px 13px;gap:8px;border-radius:999px;width:auto}
  .fd-flow-hero .fd-flow-n{font-size:15px;min-width:auto}
  .fd-flow-hero .fd-flow-t{font-size:13.5px;white-space:nowrap}

  .hero-slider .slide-dots{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
    width:max-content;background:rgba(15,15,15,.5)}
  .hero-slider .slide-dots{position:relative;bottom:auto;padding:6px 10px;gap:8px}
  .slide-dot{width:26px;height:3.5px}
  .slide-dot.is-active{width:52px}

  /* marquee */
  .mq{padding:11px 0}
  .mq span{font-size:10.5px;letter-spacing:.16em;padding:0 14px}

  /* sections */
  section{padding:44px 16px}
  .sec-h{margin-bottom:26px}
  .sec-h h2{font-size:26px;line-height:1.22}
  .sec-sub{font-size:14.5px;line-height:1.7}

  /* product splits */
  .split{gap:26px}
  .spec{padding:16px 2px;gap:14px}
  .spec h4{font-size:15.5px}
  .spec p{font-size:13.5px}
  .fig-panel{padding:16px;border-radius:18px}

  /* Flashduck band on the home page */
  .fd-home-band{padding:40px 16px}
  .fd-home-band::before{background:linear-gradient(180deg,rgba(5,5,5,.92) 0%,rgba(5,5,5,.72) 50%,rgba(5,5,5,.92) 100%)}
  .fd-home-tx h2{font-size:26px}
  .fd-pitch,.fd-home-tx p{font-size:14.5px;line-height:1.75}
  .fd-flow-a{padding:11px 13px;border-radius:12px}
  .fd-flow-t{font-size:14px}
  .fd-flow-n{font-size:20px;min-width:26px}

  /* three-step flow inside sections */
  .fd-flow{margin-top:20px;gap:8px}

  /* MCP cards: 2 per row, tighter */
  .mg{grid-template-columns:repeat(2,1fr);gap:9px}
  .mc{padding:14px 13px}
  .mc h4{font-size:13px;line-height:1.4}
  .mc p{font-size:11.5px;line-height:1.5}

  /* social cards: 2-up so QR stays legible */
  .soc{grid-template-columns:repeat(2,1fr);gap:10px}
  .soc-qr{height:158px;padding:8px}
  .soc-b{padding:10px 9px;gap:7px;min-width:0}
  .soc-ic{width:28px;height:28px;border-radius:8px;flex:0 0 28px}
  .soc-tx b{font-size:11.5px;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .soc-tx span{font-size:8px;letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .bili-t{font-size:14px}
  .bili-s{font-size:9.5px}
  .bili-btn{font-size:10.5px;padding:5px 11px;margin-top:6px}

  /* gallery, partners, media */
  .gl{grid-template-columns:repeat(2,1fr);grid-auto-rows:132px;gap:8px}
  .gi.big{grid-column:span 2;grid-row:span 2}
  .gi.wide{grid-column:span 2}
  .mei{padding:18px 18px}
  .pg{grid-template-columns:repeat(3,1fr)}
  .pi{min-height:76px;padding:16px 10px}
  .pi img{max-height:30px}

  /* community blocks */
  .cb{padding:24px 20px;border-radius:18px}
  .cb h3{font-size:19px}
  .cb-big{min-height:auto}
  .cb-big .bp{width:90%;right:-20%;bottom:-10%;opacity:.35}
  .qr img{width:132px;height:132px}

  /* tables scroll horizontally without breaking the page */
  .tbl-wrap,.comp-tbl{overflow-x:auto}

  /* footer */
  footer{padding:48px 16px 26px}
  .ft-cta{gap:18px;padding-bottom:34px;margin-bottom:34px}
  .ft-cta h3{font-size:25px}
  .ft-cta .btn{width:100%;justify-content:center}
  .fc-g{gap:26px;margin-bottom:34px}
  .ft-word{font-size:19vw;margin-bottom:22px}
  .ft-b{flex-direction:column;align-items:flex-start;gap:8px}

  /* floating button clears the home indicator */
  .to-top{right:14px;bottom:calc(14px + env(safe-area-inset-bottom))}
}

/* very small phones */
@media(max-width:380px){
  .hero-slider .sh-name{font-size:26px}
  .soc{grid-template-columns:repeat(2,1fr);gap:8px}
  .soc-qr{height:150px}
  .mg{grid-template-columns:1fr}
  .gl{grid-template-columns:1fr;grid-auto-rows:150px}
  .gi.big,.gi.wide{grid-column:span 1}
}

/* touch devices: no hover-dependent affordances */
@media(hover:none){
  .slide-arrow{display:none}
  .mc::after,.soc-qr::after,.gi span{display:none}
  .btn:hover,.mc:hover,.soc-c:hover,.mei:hover{transform:none}
}

/* mobile: skip the heavy film, use the poster instead */
@media(max-width:640px){
  .b1-slide-bg,.fd-slide-bg{pointer-events:none}
  .b1-slide-bg{background:#05070b center/cover no-repeat url("/assets/shanmao-hero-poster.webp")}
  .fd-slide-bg{background:#050505 center/cover no-repeat url("/assets/flashduck-poster.webp")}
}
@media(max-width:1020px){
  body.nav-open{overflow:hidden}
  body.nav-open .nav{position:relative;z-index:1500}
  body.nav-open header{z-index:1500}
  body.nav-open .nav>nav{
    opacity:1;transform:none;pointer-events:auto;
    background:#fff !important;z-index:1600;isolation:isolate;
    box-shadow:0 24px 60px -24px rgba(20,21,25,.45),0 0 0 1px rgba(20,21,25,.06);
    max-height:min(70vh,calc(100vh - 130px));overflow-y:auto;
  }
  .nav.open>nav{background:#fff}
  nav ul{gap:4px}
  nav>ul>li>a{font-size:17px;font-weight:600;padding:14px 16px}
  /* products sub-panel inside the mobile menu */
  .nav.open .drop{display:block;padding:4px 0 8px}
  .drop-in{background:var(--paper2);border-radius:12px;padding:8px}
  .drop-c{padding:9px}
  .drop-th{width:40px;height:40px}
  .drop-tx b{font-size:14px}
  .drop-tx i{font-size:11.5px}
}

/* ═══════════════════════════════════════════════════════
   MOBILE PASS 2 — spotted on a real 375px audit
   ═══════════════════════════════════════════════════════ */
@media(max-width:640px){
  /* MCP spec band: 3 lines instead of a tall loose stack */
  .mcp-band{gap:0;padding:0;border-radius:16px;overflow:hidden;background:var(--surface)}
  .mcp-band span{display:flex;align-items:baseline;gap:8px;flex:1 1 33.333%;padding:14px 10px;
    font-size:9.5px;letter-spacing:.08em;border-right:var(--hair) solid var(--line)}
  .mcp-band span:last-child{border-right:none}
  .mcp-band span b{font-size:19px;margin-right:0}
  .mcp-band .live{flex:1 1 100%;justify-content:center;padding:11px 10px;border-top:var(--hair) solid var(--line);
    border-right:none;font-size:9px}

  /* long body copy reads better slightly tighter */
  .sec-sub,.hero-desc{font-size:14px}

  /* community cards */
  .cb-num{gap:20px;margin:4px 0 20px}
  .cb-num b{font-size:26px}
  .cb>p{font-size:14px}
  .ol{font-size:16px}

  /* footer wordmark shouldn't clip */
  .ft-word{font-size:16vw;letter-spacing:-.045em}
  .ft-word .f,.ft-word .o{white-space:nowrap}

  /* section number line */
  .sec-ix{font-size:10.5px;letter-spacing:.14em}

  /* back-to-top clears the footer */
  .to-top{width:42px;height:42px}
  .to-top svg{width:42px;height:42px}

  /* product figure bubbles: keep them inside the panel */
  .bubble{font-size:11.5px;padding:8px 11px;max-width:calc(100% - 24px)}
  .bubble-a{left:10px;top:10px}
  .bubble-b{right:10px;bottom:12px}
}

@media(max-width:400px){
  .mcp-band span{flex:1 1 50%;border-bottom:var(--hair) solid var(--line)}
  .mcp-band span:nth-child(2){border-right:none}
  .mcp-band .live{flex:1 1 100%;border-bottom:none}
}

/* ═══ mobile hero: native scroll-snap instead of transform ═══ */
@media(max-width:900px){
  .hero-slider .slide-track{
    display:flex;height:auto;align-items:flex-start;
    overflow-x:auto;overflow-y:hidden;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;-ms-overflow-style:none;
    transform:none !important;
    transition:none !important;
    gap:0;
  }
  .hero-slider .slide-track::-webkit-scrollbar{display:none}
  .hero-slider .slide{
    display:flex !important;
    flex:0 0 100%;width:100%;height:640px !important;min-height:640px !important;max-height:640px !important;
    overflow:hidden;
    scroll-snap-align:start;scroll-snap-stop:always;
    visibility:visible !important;
  }
  .hero-slider{overflow:hidden;min-height:0 !important;height:auto !important}
  .hero-slider .slide-track{touch-action:pan-x pan-y;height:auto !important;align-items:flex-start}
  .hero-slider .slide{height:auto !important;align-self:flex-start}
}

/* ═══════════════════════════════════════════════════════════════
   MOBILE HERO — final, simple: copy on top, media below.
   Appended last so it overrides every earlier mobile experiment.
   ═══════════════════════════════════════════════════════════════ */
@media(max-width:900px){
  .hero-slider{min-height:0 !important;height:auto !important;padding:0 !important;background:#050505}
  .hero-slider .slide-track{height:auto !important;align-items:flex-start !important}

  .hero-slider .slide{
    position:relative;display:flex !important;flex-direction:column;
    flex:0 0 100%;width:100%;
    height:auto !important;min-height:700px !important;max-height:none !important;
    padding:22px 18px 18px !important;
    gap:0;overflow:visible;
    scroll-snap-align:start;scroll-snap-stop:always;
    visibility:visible !important;
  }

  /* ---- media: one shared block under the copy ---- */
  .hero-slider .fd-slide-bg,
  .hero-slider .b1-slide-bg{
    position:relative !important;
    inset:auto !important;top:auto !important;right:auto !important;bottom:auto !important;
    left:auto !important;transform:none !important;
    order:2;
    width:100% !important;height:auto !important;
    aspect-ratio:16/9;
    margin:18px 0 0 !important;
    border-radius:14px;
    object-fit:cover;object-position:50% 50%;
    background:#05070b;
    z-index:1;
  }
  .hero-slider .slide .hero-in{order:1;width:100%;position:relative;z-index:3}
  .hero-slider .slide-scrim{display:none !important}
  .hero-slider .slide-bot::before,
  .hero-slider .slide-bot::after{display:none !important}

  /* ---- slide 2: the robot becomes a normal figure under the copy ---- */
  .hero-slider .stage{
    position:relative !important;inset:auto !important;
    order:2;width:100% !important;height:auto !important;
    max-width:200px !important;margin:2px auto 0 !important;
    aspect-ratio:1/1;opacity:1 !important;z-index:1 !important;
    flex:0 0 auto;overflow:visible;
  }
  .hero-slider .stage img{width:100% !important;height:100% !important;object-fit:contain !important}
  .hero-slider .stage .bot{position:absolute;inset:0}
  .hero-slider .stage .bot img{object-fit:contain;object-position:50% 50%}
  .hero-slider .stage .tick,
  .hero-slider .stage .stage-hint,
  .hero-slider .stage .anno,
  .hero-slider .stage .stage-frame,
  .hero-slider .stage .bot-shadow{display:none !important}
  .hero-slider .stage .bot-wrap{position:absolute;inset:0;transform:none !important}
  .hero-slider .stage .bot-float{position:absolute;inset:0;animation:none !important}

  /* ---- type ---- */
  .hero-slider .slide-copy{max-width:none}
  .hero-slider .kicker{font-size:10px;padding:6px 11px;margin-bottom:14px}
  .hero-slider .sh-brand{font-size:11px;letter-spacing:.26em}
  .hero-slider .sh-name{font-size:27px;line-height:1.12}
  .hero-slider .slide-en{font-size:11px;margin-top:6px}
  .hero-slider .hero-desc{font-size:14px;line-height:1.72;margin-bottom:12px}
  .hero-slider .fd-key-line{font-size:13px;line-height:1.66;padding-left:11px;margin-bottom:0}

  /* ---- buttons: content width ---- */
  .hero-slider .fd-flow-hero{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .hero-slider .fd-flow-hero li{flex:0 1 auto;min-width:0}
  .hero-slider .fd-flow-hero .fd-flow-a{padding:9px 14px;gap:8px;border-radius:999px;width:auto}
  .hero-slider .fd-flow-hero .fd-flow-n{font-size:15px;min-width:auto}
  .hero-slider .fd-flow-hero .fd-flow-t{font-size:13.5px;white-space:nowrap}
  .hero-slider .fd-flow-hero .fd-flow-go{width:20px;height:20px;font-size:10px}

  .hero-slider .hero-cta{gap:9px;margin-bottom:12px}
  .hero-slider .hero-cta .btn{padding:11px 20px;font-size:14px}
  .hero-slider .hero-stats{margin-top:12px;padding-top:12px}
  .hero-slider .hst b{font-size:21px}
  .hero-slider .hst span{font-size:9px;letter-spacing:.05em}

  /* dots flow after the content */
  .hero-slider .slide-dots{position:relative !important;left:auto !important;bottom:auto !important;
    transform:none !important;margin:18px auto 0;width:max-content}
}

/* posters are tiny; show them instantly and fade the film in when it can play */
@media(max-width:900px){
  .hero-slider video.fd-slide-bg,
  .hero-slider video.b1-slide-bg{
    background-size:cover;background-position:50% 50%;background-repeat:no-repeat;
  }
  .hero-slider video.fd-slide-bg{background-image:url("/assets/flashduck-poster.webp")}
  .hero-slider video.b1-slide-bg{background-image:url("/assets/shanmao-hero-poster.webp")}
}

/* ═══════════════════════════════════════════════════════════════
   MOBILE HERO — vertical, seamless (overrides all earlier mobile rules)
   ═══════════════════════════════════════════════════════════════ */
@media(max-width:900px){
  .hero-slider{
    min-height:0 !important;height:auto !important;max-height:none !important;
    overflow:visible !important;padding:0 !important;background:#050505;
  }
  .hero-slider .slide-track{
    display:block !important;height:auto !important;
    overflow:visible !important;scroll-snap-type:none !important;
    transform:none !important;
  }
  .hero-slider .slide{
    position:relative !important;display:flex !important;flex-direction:column;
    width:100% !important;height:auto !important;
    min-height:0 !important;max-height:none !important;
    padding:26px 18px 34px !important;
    overflow:hidden;isolation:isolate;
    visibility:visible !important;opacity:1 !important;pointer-events:auto !important;
  }
  .hero-slider .slide,
  .hero-slider .slide:not(.is-active){pointer-events:auto !important}
  .hero-slider .slide .hero-in,
  .hero-slider .slide .slide-copy,
  .hero-slider .slide a,
  .hero-slider .slide button{pointer-events:auto !important}
  /* the media sits under the copy, soft-edged into the black page */
  .hero-slider .fd-slide-bg,
  .hero-slider .b1-slide-bg{
    position:relative !important;inset:auto !important;left:auto !important;top:auto !important;
    right:auto !important;bottom:auto !important;transform:none !important;
    order:2;width:calc(100% + 36px) !important;height:auto !important;
    aspect-ratio:16/9;margin:22px -18px 0 !important;
    border-radius:0;object-fit:cover;object-position:50% 50%;
    background:#05070b;z-index:1;
    -webkit-mask-image:linear-gradient(to bottom,#000 62%,rgba(0,0,0,.55) 82%,transparent 100%),
                       linear-gradient(to right,transparent 0%,#000 7%,#000 93%,transparent 100%);
    -webkit-mask-composite:source-in;
    mask-image:linear-gradient(to bottom,#000 62%,rgba(0,0,0,.55) 82%,transparent 100%),
               linear-gradient(to right,transparent 0%,#000 7%,#000 93%,transparent 100%);
    mask-composite:intersect;
  }
  .hero-slider .slide .hero-in{order:1;width:100%;position:relative;z-index:3}
  .hero-slider .slide-scrim{display:none !important}
  .hero-slider .slide-bot::before,
  .hero-slider .slide-bot::after{display:none !important}
  .hero-slider .slide-dots{display:none !important}

  /* slide 2 (the Bot 1 figure) — same soft treatment */
  .hero-slider .stage{
    position:relative !important;inset:auto !important;
    order:2;width:calc(100% + 36px) !important;height:auto !important;
    max-width:none !important;margin:10px -18px 0 !important;
    aspect-ratio:1/1;opacity:1 !important;z-index:1 !important;flex:0 0 auto;overflow:hidden;
    -webkit-mask-image:radial-gradient(72% 72% at 50% 48%,#000 55%,transparent 100%);
    mask-image:radial-gradient(72% 72% at 50% 48%,#000 55%,transparent 100%);
  }
  .hero-slider .stage img{width:100% !important;height:100% !important;object-fit:cover !important;object-position:50% 50%}
  .hero-slider .stage .tick,.hero-slider .stage .stage-hint,.hero-slider .stage .anno,
  .hero-slider .stage .stage-frame,.hero-slider .stage .bot-shadow{display:none !important}
  .hero-slider .stage .bot-wrap,.hero-slider .stage .bot-float,.hero-slider .stage .bot{position:absolute;inset:0;transform:none !important;animation:none !important}

  /* type + buttons */
  .hero-slider .slide-copy{max-width:none}
  .hero-slider .kicker{font-size:10px;padding:6px 11px;margin-bottom:14px}
  .hero-slider .sh-brand{font-size:11px;letter-spacing:.26em}
  .hero-slider .sh-name{font-size:27px;line-height:1.12}
  .hero-slider .slide-en{font-size:11px;margin-top:6px}
  .hero-slider .hero-desc{font-size:14px;line-height:1.72;margin-bottom:12px}
  .hero-slider .fd-key-line{font-size:13px;line-height:1.66;padding-left:11px;margin-bottom:0}
  .hero-slider .fd-flow-hero{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .hero-slider .fd-flow-hero li{flex:0 1 auto;min-width:0}
  .hero-slider .fd-flow-hero .fd-flow-a{padding:9px 14px;gap:8px;border-radius:999px;width:auto}
  .hero-slider .fd-flow-hero .fd-flow-n{font-size:15px;min-width:auto}
  .hero-slider .fd-flow-hero .fd-flow-t{font-size:13.5px;white-space:nowrap}
  .hero-slider .fd-flow-hero .fd-flow-go{width:20px;height:20px;font-size:10px}
  .hero-slider .hero-cta{gap:9px;margin-bottom:14px}
  .hero-slider .hero-cta .btn{padding:11px 20px;font-size:14px}
  .hero-slider .hero-stats{margin-top:12px;padding-top:12px}
  .hero-slider .hst b{font-size:21px}
  .hero-slider .hst span{font-size:9px;letter-spacing:.05em}

  /* video posters paint immediately */
  .hero-slider video.fd-slide-bg{background:url("/assets/flashduck-poster.webp") center/cover no-repeat}
  .hero-slider video.b1-slide-bg{background:url("/assets/shanmao-hero-poster.webp") center/cover no-repeat}
}


/* ═══ mobile menu: dark surface, bigger product thumbs ═══ */
@media(max-width:1020px){
  body.nav-open .nav>nav,
  body.nav-open #nN>nav,
  .nav.open>nav{
    background:#0E0E12 !important;
    border:1px solid rgba(255,255,255,.10) !important;
    box-shadow:0 30px 70px -30px rgba(0,0,0,.9) !important;
  }
  /* light text only inside the opened panel, never on the page links */
  body.nav-open .nav>nav>ul>li>a,
  body.nav-open #nN>nav>ul>li>a,
  .nav.open>nav>ul>li>a{color:#F2EDE3 !important;font-size:17px;font-weight:600}
  body.nav-open .nav>nav>ul>li>a:hover{background:rgba(255,255,255,.07) !important}
  body.nav-open .nav>nav .has-drop>a::before{border-color:#F2EDE3 !important}
  body.nav-open .nav>nav a.on::after{background:#FF6A2A}

  .nav.open .drop-in{background:#15151A !important;border-radius:14px;padding:10px;box-shadow:none;border:none}
  .nav.open .drop-g{grid-template-columns:1fr;gap:4px}
  .nav.open .drop-c{display:flex;flex-direction:row;align-items:center;gap:14px;padding:9px 10px;border-radius:12px;background:transparent}
  .nav.open .drop-tx{align-self:center}
  .nav.open .drop-c:hover{background:rgba(255,255,255,.06)}
  .nav.open .drop-th{
    flex:0 0 68px !important;width:68px !important;height:68px !important;border-radius:14px;
    background:#0A0A0D !important;border:1px solid rgba(255,255,255,.10) !important;
    display:flex;align-items:center;justify-content:center;overflow:hidden;
  }
  .nav.open .drop-th img{width:100% !important;height:100% !important;object-fit:contain !important;object-position:50% 50%}
  .nav.open .drop-tx b{color:#F5EFE3 !important;font-size:15.5px;line-height:1.35}
  .nav.open .drop-tx i{color:#9C9488 !important;font-size:12.5px;line-height:1.45}
  .nav.open .drop-t{color:#7E776C !important}
  .nav.open .drop{padding-top:8px}
}

/* the sticky header sits over the page background, not the hero, so give dark-hero pages
   a black body backdrop for the first screen */
body.dark-top{background:#08080B}
body.dark-top main{background:var(--paper)}


/* ═══ desktop carousel: hard guarantee, overrides any leftover mobile rule ═══ */
@media(min-width:901px){
  .hero-slider .slide-track{
    display:flex !important;
    flex-direction:row !important;
    height:100% !important;
    overflow:visible !important;
  }
  .hero-slider .slide{
    display:flex !important;
    position:relative !important;
    flex:0 0 100% !important;
    width:100% !important;
    height:100% !important;
    visibility:visible !important;
    opacity:1 !important;
    transform:none;
  }
  .hero-slider .slide:not(.is-active){pointer-events:none}
  .hero-slider .slide.is-active{pointer-events:auto}
}

/* ═══ header on dark hero surfaces ═══ */
header.on-dark{background:#08080B;border-bottom-color:rgba(255,255,255,.07)}
header.on-dark.sc{background:#08080B;border-bottom-color:rgba(255,255,255,.10);box-shadow:0 10px 30px -24px rgba(0,0,0,.85)}
header.on-dark .brand-t1{color:#F5EFE3}
header.on-dark .brand-t2{color:#8F887C}
header.on-dark nav a{color:#C9C1B4}
header.on-dark nav a:hover{color:#fff;background:rgba(255,255,255,.10)}
header.on-dark nav a.on{color:#fff}
header.on-dark .lang{border-color:rgba(255,255,255,.22)}
header.on-dark .lang a{color:#B4AC9F}
header.on-dark .lang a.cur{background:#F5EFE3;color:#0B0B0E}
header.on-dark .ntg{border-color:rgba(255,255,255,.24)}
header.on-dark .ntg span{background:#F5EFE3}
header.on-dark .drop-in{background:rgba(18,18,22,.97);border-color:rgba(255,255,255,.12)}
header.on-dark .drop-in::before{background:rgba(18,18,22,.97);border-color:rgba(255,255,255,.12)}
header.on-dark .drop-t{color:#8F887C}
header.on-dark .drop-c:hover{background:rgba(255,255,255,.07)}
header.on-dark .drop-th{background:#111;border-color:rgba(255,255,255,.12)}
header.on-dark .drop-tx b{color:#F5EFE3}
header.on-dark .drop-tx i{color:#9C9488}