:root{
  --bg:#04050a;
  --bg2:#080a12;
  --panel:rgba(255,255,255,.028);
  --line:rgba(255,255,255,.09);
  --txt:#e9ecf5;
  --dim:#b0b8ca;
  --faint:#8a91a6;
  --cy:#6ee7ff;
  --bl:#8ea2ff;
  --am:#ffb86b;
  --serif:'Songti SC','STSong','Noto Serif CJK SC','Noto Serif SC','SimSun',serif;
  --sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
  --mono:ui-monospace,'SF Mono','Cascadia Code','JetBrains Mono',Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{background:var(--bg);color:var(--txt);font-family:var(--sans);overflow-x:hidden}
::selection{background:rgba(110,231,255,.25);color:#fff}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#1c2233;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#2b3450}

/* ---------- 星空底与粒子画布 ---------- */
body::before{
  content:'';
  position:fixed;
  inset:0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(91, 124, 158, 0.08), transparent 55%),
    radial-gradient(ellipse 40% 30% at 90% 80%, rgba(70, 90, 130, 0.05), transparent 50%),
    linear-gradient(rgba(91, 124, 158, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 124, 158, 0.025) 1px, transparent 1px);
  background-size:auto, auto, 120px 120px, 120px 120px;
  pointer-events:none;
  z-index:0;
}
#particle-canvas{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  pointer-events:none;
  z-index:6;
}

/* ---------- 内容层 ---------- */
.wrap{position:relative;z-index:5}
section{position:relative;padding:0 6vw}

/* 导航 */
nav{position:fixed;top:0;left:0;right:0;z-index:300;display:flex;align-items:center;justify-content:space-between;
  padding:22px 6vw;transition:background .4s,backdrop-filter .4s,padding .4s,border-color .4s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(4,5,10,.72);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:14px 6vw;border-color:var(--line)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--txt)}
.logo svg{width:34px;height:34px}
.logo b{font-family:var(--serif);font-size:19px;letter-spacing:.14em;font-weight:700}
.logo small{font-family:var(--mono);font-size:9px;letter-spacing:.32em;color:var(--faint);display:block;margin-top:2px}
.nav-links{display:flex;gap:38px;list-style:none}
.nav-links a{color:var(--dim);text-decoration:none;font-size:14px;letter-spacing:.18em;position:relative;transition:color .3s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:linear-gradient(90deg,var(--am),transparent);transition:width .35s}
.nav-links a:hover{color:var(--am)}
.nav-links a:hover::after{width:100%}
.nav-links a.cur{color:var(--am)}
.nav-links a.cur::after{width:100%}
.nav-cta{font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--am);border:1px solid rgba(255,184,107,.38);
  padding:9px 20px;border-radius:99px;text-decoration:none;transition:.35s}
.nav-cta:hover{background:rgba(255,184,107,.09);box-shadow:0 0 24px rgba(255,184,107,.22)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:9px 13px;color:var(--txt);font-size:16px;line-height:1;cursor:pointer;z-index:210;position:relative}
@media(max-width:860px){.nav-links{display:none}.burger{display:block}}
.m-menu{position:fixed;inset:0;z-index:200;background:rgba(4,5,10,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;justify-content:center;padding:0 9vw;opacity:0;pointer-events:none;transition:opacity .35s}
.m-menu.open{opacity:1;pointer-events:auto}
.m-menu a{font-family:var(--serif);font-size:29px;letter-spacing:.12em;color:var(--txt);text-decoration:none;
  padding:19px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline}
.m-menu a span{font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.3em}
.m-menu .m-mail{margin-top:36px;border:1px solid rgba(110,231,255,.35);border-radius:99px;padding:16px;
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--cy);justify-content:center;display:block;text-align:center}

/* Hero */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:12vh 6vw 130px}
.hero .tag{font-family:var(--mono);font-size:11px;letter-spacing:.5em;line-height:2;flex-wrap:wrap;color:var(--cy);display:flex;align-items:center;gap:14px;margin-bottom:34px}
.hero .tag::before{content:"";width:48px;height:1px;background:linear-gradient(90deg,var(--cy),transparent)}
.hero h1{font-family:var(--serif);font-weight:900;font-size:clamp(44px,7.2vw,104px);line-height:1.14;letter-spacing:.06em}
.hero h1 .ln{display:block;overflow:hidden}
.hero h1 .ln>span{display:inline-block;transform:translateY(110%)}
.hero h1 em{font-style:normal;background:linear-gradient(105deg,#fff 20%,var(--cy) 55%,var(--bl) 85%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{max-width:560px;margin-top:34px;color:var(--dim);font-size:16px;line-height:2;font-weight:300;letter-spacing:.06em}
.hero p b{color:var(--txt);font-weight:500}
.hero-btns{display:flex;gap:20px;margin-top:48px;flex-wrap:wrap}
.btn{position:relative;display:inline-flex;align-items:center;gap:12px;padding:16px 34px;border-radius:99px;
  font-size:14px;letter-spacing:.2em;text-decoration:none;transition:.4s;overflow:hidden}
.btn-solid{color:#04060c;background:linear-gradient(120deg,var(--cy),var(--bl));font-weight:700}
.btn-solid:hover{box-shadow:0 0 44px rgba(110,231,255,.45);transform:translateY(-2px)}
.btn-ghost{color:var(--txt);border:1px solid var(--line)}
.btn-ghost:hover{border-color:rgba(110,231,255,.5);background:rgba(110,231,255,.05)}
.hero-hint{position:absolute;bottom:36px;left:6vw;display:flex;align-items:center;gap:14px;color:var(--faint);
  font-family:var(--mono);font-size:10px;letter-spacing:.34em}
.hero-hint i{width:1px;height:52px;background:linear-gradient(180deg,var(--cy),transparent);display:block;animation:drop 2s ease-in-out infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.drag-tip{position:absolute;bottom:36px;right:6vw;font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--faint);
  display:flex;align-items:center;gap:10px}
.drag-tip .pulse{width:10px;height:10px;border-radius:50%;border:1px solid var(--cy);position:relative}
.drag-tip .pulse::after{content:"";position:absolute;inset:-1px;border-radius:50%;border:1px solid var(--cy);animation:ripple 2s ease-out infinite}
@keyframes ripple{from{transform:scale(1);opacity:.9}to{transform:scale(3.2);opacity:0}}
.hero-stats{display:flex;gap:6vw;margin-top:9vh;border-top:1px solid var(--line);padding-top:34px;width:100%;flex-wrap:wrap}
.stat b{font-family:var(--mono);font-size:clamp(26px,3vw,40px);font-weight:500;color:#fff;display:block}
.stat b i{font-style:normal;color:var(--cy);font-size:.6em;margin-left:2px}
.stat span{font-size:12px;color:var(--faint);letter-spacing:.24em;margin-top:6px;display:block}

/* 通用节标题 */
.sec-head{margin-bottom:70px}
.sec-head .no{font-family:var(--mono);font-size:12px;letter-spacing:.4em;color:var(--cy);display:flex;align-items:center;gap:16px;margin-bottom:22px}
.sec-head .no::after{content:"";flex:1;height:1px;background:var(--line)}
.sec-head h2{font-family:var(--serif);font-weight:900;font-size:clamp(30px,4.2vw,56px);letter-spacing:.06em;line-height:1.25}
.sec-head h2 em{font-style:normal;color:var(--cy)}
.sec-head .sub{margin-top:18px;color:var(--dim);font-size:15px;line-height:2;max-width:640px;font-weight:300;letter-spacing:.04em}
#tools .sec-head .sub{max-width:none}
.sector{padding:16vh 6vw}

/* 板块一：一体两面 双卡 */
.duo{display:grid;grid-template-columns:1fr 86px 1fr;gap:0;align-items:stretch}
.duo-card{position:relative;border:1px solid var(--line);background:var(--panel);border-radius:20px;padding:52px 44px;overflow:hidden;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:transform .5s cubic-bezier(.2,.8,.2,1),border-color .5s,box-shadow .5s}
.duo-card:hover{transform:translateY(-8px);border-color:rgba(110,231,255,.35);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.duo-card.amber:hover{border-color:rgba(255,184,107,.35)}
.duo-card .glow{position:absolute;inset:0;opacity:0;transition:opacity .6s;pointer-events:none;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(110,231,255,.09),transparent 55%)}
.duo-card.amber .glow{background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(255,184,107,.09),transparent 55%)}
.duo-card:hover .glow{opacity:1}
.duo-card .kicker{font-family:var(--mono);font-size:10px;letter-spacing:.36em;margin-bottom:26px;display:flex;align-items:center;gap:12px}
.duo-card.cy .kicker{color:var(--cy)}
.duo-card.amber .kicker{color:var(--am)}
.duo-card .kicker::before{content:"";width:26px;height:1px;background:currentColor}
.duo-card h3{font-family:var(--serif);font-size:clamp(24px,2.4vw,34px);font-weight:900;letter-spacing:.08em;line-height:1.4;margin-bottom:8px}
.duo-card .en{font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--faint);margin-bottom:26px}
.duo-card p{color:var(--dim);font-size:14px;line-height:2;font-weight:300;letter-spacing:.04em;margin-bottom:30px}
.duo-card ul{list-style:none;display:grid;gap:14px}
.duo-card li{font-size:13px;color:var(--txt);letter-spacing:.08em;display:flex;align-items:center;gap:12px;font-weight:300}
.duo-card li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cy);box-shadow:0 0 8px var(--cy);flex:none}
.duo-card.amber li::before{background:var(--am);box-shadow:0 0 8px var(--am)}
.duo-core{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;position:relative}
.duo-core::before,.duo-core::after{content:"";width:1px;flex:1;background:linear-gradient(180deg,transparent,rgba(142,162,255,.5),transparent)}
.duo-core .core-badge{width:64px;height:64px;border-radius:50%;border:1px solid rgba(142,162,255,.5);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:15px;font-weight:900;letter-spacing:.1em;color:#fff;flex:none;position:relative;
  background:radial-gradient(circle,rgba(142,162,255,.16),transparent 70%);writing-mode:vertical-rl}
.duo-core .core-badge::after{content:"";position:absolute;inset:-1px;border-radius:50%;border:1px solid rgba(142,162,255,.6);animation:ripple 2.6s ease-out infinite}
.duo-arch{margin-top:60px;border:1px dashed rgba(142,162,255,.25);border-radius:16px;padding:30px 36px;display:flex;flex-wrap:wrap;gap:14px 34px;
  align-items:center;justify-content:space-between;background:rgba(142,162,255,.03)}
.duo-arch span{font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--bl)}
.duo-arch b{font-size:13px;color:var(--dim);font-weight:300;letter-spacing:.14em}
.duo-arch b i{font-style:normal;color:var(--txt);font-weight:500}
@media(max-width:980px){.duo{grid-template-columns:1fr}.duo-core{flex-direction:row;padding:26px 0}.duo-core::before,.duo-core::after{width:auto;height:1px}}

/* 板块一：平台实景 */
.shots-head{display:flex;align-items:baseline;gap:18px;margin:72px 0 24px}
.shots-head b{font-family:var(--serif);font-size:20px;letter-spacing:.12em;font-weight:700}
.shots-head span{font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--faint)}
.shots{display:grid;grid-template-columns:1fr;gap:16px}
.shot-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#070b13;transition:border-color .4s}
.shot-card:hover{border-color:rgba(110,231,255,.3)}
.shot-card .bar{display:flex;align-items:center;gap:7px;padding:11px 16px;border-bottom:1px solid var(--line)}
.shot-card .bar i{width:8px;height:8px;border-radius:50%;background:#22304a}
.shot-card .bar span{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--faint);margin-left:8px}
.shot-card .imgbox{overflow:hidden}
.shot-card img{width:100%;display:block;aspect-ratio:4/3;object-fit:cover;object-position:top;transition:transform .9s cubic-bezier(.2,.8,.2,1)}
.shot-card:hover img{transform:scale(1.03)}
.shot-pano img{aspect-ratio:auto}
.shot-card figcaption{padding:16px 20px;display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.shot-card figcaption b{font-size:13.5px;letter-spacing:.08em;font-weight:500}
.shot-card figcaption span{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:var(--faint)}
@media(max-width:980px){.shots{grid-template-columns:1fr}}

/* 板块二/三：图文交错 */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:6vw;align-items:center}
.split.rev{grid-template-columns:1fr 1.05fr}
.split.rev .split-media{order:2}
@media(max-width:980px){.split,.split.rev{grid-template-columns:1fr}.split.rev .split-media{order:0}}
.split-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--bg2)}
.split-media img{width:100%;height:100%;object-fit:cover;filter:grayscale(.5) contrast(1.08) brightness(.82);transform:scale(1.06);transition:transform 1.4s cubic-bezier(.2,.8,.2,1)}
.split-media:hover img{transform:scale(1.01)}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(110,231,255,.14),rgba(4,5,10,.55) 70%);mix-blend-mode:screen}
.split-media .frame{position:absolute;inset:14px;border:1px solid rgba(255,255,255,.14);border-radius:12px;pointer-events:none}
.split-media .cap{position:absolute;left:22px;bottom:18px;font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:rgba(255,255,255,.75);z-index:2}
.split-body .kicker{font-family:var(--mono);font-size:10px;letter-spacing:.36em;color:var(--cy);margin-bottom:22px;display:flex;align-items:center;gap:12px}
.split-body .kicker::before{content:"";width:26px;height:1px;background:currentColor}
.split-body h3{font-family:var(--serif);font-size:clamp(26px,3vw,42px);font-weight:900;letter-spacing:.08em;line-height:1.35;margin-bottom:22px}
.split-body p{color:var(--dim);font-size:14.5px;line-height:2.05;font-weight:300;letter-spacing:.04em;margin-bottom:34px}
.flow{display:grid;gap:0;border-left:1px solid var(--line);margin-left:6px}
.flow div{position:relative;padding:0 0 22px 26px}
.flow div::before{content:"";position:absolute;left:-5.5px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--bg);border:1px solid var(--cy)}
.flow div:last-child{padding-bottom:0}
.flow b{font-size:14px;letter-spacing:.14em;font-weight:500;color:var(--txt);display:block;margin-bottom:4px}
.flow span{font-size:12px;color:var(--faint);letter-spacing:.08em;font-weight:300}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chips span{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--dim);border:1px solid var(--line);border-radius:99px;padding:7px 15px;transition:.3s}
.chips span:hover{color:var(--cy);border-color:rgba(110,231,255,.4)}

/* 板块四：生产力工具 */
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tool-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:34px 26px;overflow:hidden;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:transform .45s cubic-bezier(.2,.8,.2,1),border-color .45s,box-shadow .45s;min-height:240px}
.tool-card:hover{transform:translateY(-6px);border-color:rgba(110,231,255,.32);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(110,231,255,.5),transparent);opacity:0;transition:opacity .5s}
.tool-card:hover::before{opacity:1}
.tool-icon{width:44px;height:44px;border-radius:11px;background:rgba(110,231,255,.07);border:1px solid rgba(110,231,255,.16);
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;color:var(--cy)}
.tool-card h4{font-size:17px;letter-spacing:.06em;font-weight:500;margin-bottom:12px}
.tool-card p{color:var(--dim);font-size:13.5px;line-height:1.95;font-weight:300;letter-spacing:.03em}
a.tool-card{color:inherit;text-decoration:none}
.tool-more{margin-top:auto;padding-top:20px;font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--cy);display:inline-flex;align-items:center;gap:8px}
.tool-more i{font-style:normal;transition:transform .3s}
a.tool-card:hover .tool-more i{transform:translateX(5px)}
@media(max-width:980px){.tools-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.tools-grid{grid-template-columns:1fr}}

/* 理念带 */
.philo{padding:18vh 6vw;text-align:center}
.philo .line{font-family:var(--mono);font-size:11px;letter-spacing:.5em;color:var(--cy);margin-bottom:36px}
.philo-stage{position:relative;max-width:1000px;margin:0 auto}
#philoFx{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}
.philo-line{position:relative;z-index:2;font-family:var(--serif);font-weight:900;font-size:clamp(26px,4.4vw,56px);line-height:1.6;letter-spacing:.08em;color:#E9ECF5;margin:0;padding:20px 0;transition:opacity .9s ease,filter .9s ease,letter-spacing .9s ease}
.philo-line.out{opacity:0;filter:blur(12px);letter-spacing:.32em}

/* 页脚 */
footer{border-top:1px solid var(--line);padding:80px 6vw 40px;position:relative;z-index:5;background:rgba(4,5,10,.6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:5vw;margin-bottom:64px}
@media(max-width:980px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font-family:var(--mono);font-size:10px;letter-spacing:.34em;color:var(--faint);margin-bottom:22px}
.foot-grid a,.foot-grid p{display:block;color:var(--dim);text-decoration:none;font-size:13px;line-height:2.2;letter-spacing:.08em;font-weight:300;transition:color .3s}
.foot-grid a:hover{color:var(--cy)}
.foot-brand b{font-family:var(--serif);font-size:22px;letter-spacing:.14em;display:block;margin-bottom:8px}
.foot-brand span{font-family:var(--mono);font-size:9px;letter-spacing:.32em;color:var(--faint)}
.foot-tag{margin-top:20px;white-space:nowrap}
.foot-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--faint)}

/* S = SOVEREIGN 首换揭示小注（仅 hero 首次 glitch 时浮现一次） */
.mx-hint{font-family:var(--mono);font-size:12px;letter-spacing:.28em;color:var(--am);
  opacity:0;transition:opacity .9s;vertical-align:super;margin-left:22px;white-space:nowrap;font-weight:400}
.mx-hint.show{opacity:.9}
@media(max-width:640px){.mx-hint{display:none}}

/* 页脚宣言：收进底部栏，最小存在感 */
/* 「真正主人」阳光扫过：双层背景=句内渐变底 + 窄暖光带，滚入页脚后仅扫一次 */
.foot-bottom .foot-motto .sun{font-style:normal;
  background:linear-gradient(105deg,#fff 20%,var(--cy) 55%,var(--bl) 85%),
             linear-gradient(100deg,transparent 36%,rgba(255,208,130,.55) 45%,rgba(255,246,220,1) 50%,rgba(255,208,130,.55) 55%,transparent 64%);
  background-size:100% 100%,260% 100%;
  background-position:0 0,-200% 0;
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.foot-bottom .foot-motto .sun.lit{animation:sunSweep 1.5s cubic-bezier(.4,0,.2,1) .1s 1 forwards}
@keyframes sunSweep{to{background-position:0 0,200% 0}}
@media (prefers-reduced-motion:reduce){.foot-bottom .foot-motto .sun.lit{animation:none}}
.foot-bottom .foot-motto{font-size:11px;letter-spacing:.2em;color:var(--dim);
  background:linear-gradient(105deg,#fff 20%,var(--cy) 55%,var(--bl) 85%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.foot-bottom .foot-motto em{font-style:normal;font-weight:600;color:var(--am);-webkit-text-fill-color:var(--am)}
.foot-bottom .foot-motto .t{font-weight:600;color:var(--am);-webkit-text-fill-color:var(--am)}   /* 租户=告警金：痛点倒钩，句尾记忆位 */
.foot-bottom .foot-motto.rv{transform:translateY(10px)}   /* 底部栏只许轻微浮现，不用全站 46px 的大幅位移 */
.foot-bottom .foot-motto i{font-style:normal;font-family:var(--mono);font-size:9px;letter-spacing:.24em;color:var(--faint);margin-left:12px}
@media(max-width:860px){.foot-bottom .foot-motto i{display:block;margin:8px 0 0}}

/* ---------- SAI 造词（S=跃迁层·琥珀金 / AI=本体·亮白） ---------- */
.s-tag{color:var(--am);font-weight:600;font-size:1.06em}
/* 页脚品牌区修正：.foot-brand span(0-1-1) 优先级压过 .s-tag(0-1-0)，需提高 */
.foot-tag .s-tag{font-family:var(--sans);font-size:1.06em;letter-spacing:normal;color:var(--am)}
.sai{color:var(--txt);font-weight:500}

/* ---------- AI↔SI Glitch 解码轮换 ---------- */
.mx-ch{font-style:normal}
/* hero：mx-wrap 独立承担青→蓝渐变（AI 在原词尾色段），与 em「主权」基线对齐；
   mx-ch 为静态文字，无定位/无 filter，规避 Chrome background-clip:text 子层合成 bug */
.hero .mx-wrap{display:inline-block;vertical-align:baseline;
  background:linear-gradient(105deg,var(--cy) 0%,var(--bl) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
/* 完整动画载体（h2 等无 background-clip 祖先处）：可安全定位 + 扫描线 */
.mx-ch.rel{display:inline-block;position:relative;text-align:center}
.mx-ch.rel::after{content:'';position:absolute;left:-14%;right:-14%;top:-30%;height:26%;opacity:0;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(110,231,255,.55),transparent);mix-blend-mode:screen}
.mx-ch.rel.scan::after{animation:mxScan .5s cubic-bezier(.4,0,.2,1) 1}
/* Glitch：text-shadow RGB 重影（不创建合成层，裁剪层内安全）；
   top/left 抖动仅 .rel 生效，hero 静态字自动忽略 */
.mx-ch.on{animation:mxJit .12s steps(2) 5;
  text-shadow:-.06em .03em rgba(255,77,94,.78),.06em -.03em rgba(110,231,255,.78)}
.mx-ch.lock{text-shadow:0 0 .32em rgba(110,231,255,.85)}
@keyframes mxJit{0%,100%{top:0;left:0}25%{top:.02em;left:-.03em}50%{top:-.02em;left:.03em}75%{top:-.03em;left:-.02em}}
@keyframes mxScan{0%{opacity:0;top:-30%}20%{opacity:.95}100%{opacity:0;top:108%}}
@media (prefers-reduced-motion:reduce){
  .mx-ch.on,.mx-ch.rel.scan::after{animation:none!important}
  .mx-ch.lock{text-shadow:none}
}

/* 进场动画 */
.rv{opacity:0;transform:translateY(46px);transition:opacity 1s cubic-bezier(.2,.8,.2,1),transform 1s cubic-bezier(.2,.8,.2,1)}
.rv.on{opacity:1;transform:none}
.rv-d1{transition-delay:.12s}.rv-d2{transition-delay:.24s}.rv-d3{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
}

@media(max-width:640px){
  .hero .tag{letter-spacing:.26em;max-width:300px}
}
.hero .tag i{font-style:normal;white-space:nowrap}