:root{
  --bg:#060a14;
  --bg-2:#0a1020;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.1);
  --txt:#e8edf7;
  --muted:#9aa7bd;
  --teal:#34e0b4;
  --blue:#4f8dff;
  --violet:#8b7cff;
  --grad:linear-gradient(120deg,#34e0b4 0%,#4f8dff 55%,#8b7cff 100%);
  --radius:18px;
  --maxw:1180px;
  --nav-h:68px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--nav-h);
  backdrop-filter:blur(14px);
  background:rgba(6,10,20,.55);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s;
}
.nav.is-scrolled{background:rgba(6,10,20,.88);border-bottom-color:var(--line)}
.nav__inner{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand__mark{width:30px;height:30px;display:grid;place-items:center}
.brand__mark svg{width:100%;height:100%}
.brand__accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav__links{display:flex;gap:26px;margin-left:16px;font-size:14.5px;color:var(--muted)}
.nav__links a{position:relative;transition:color .2s}
.nav__links a:hover{color:#fff}
.nav__links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav__links a:hover::after{transform:scaleX(1)}
.nav__actions{margin-left:auto;display:flex;align-items:center;gap:12px}

.lang{display:flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:3px}
.lang__btn{
  border:0;background:transparent;color:var(--muted);cursor:pointer;
  font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:999px;transition:.2s;font-family:inherit;
}
.lang__btn.is-active{background:var(--grad);color:#04121a}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:12px 22px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s,box-shadow .25s,background .25s;font-family:inherit;white-space:nowrap;
}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--primary{background:var(--grad);color:#04121a;box-shadow:0 8px 26px rgba(52,224,180,.22)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(52,224,180,.34)}
.btn--ghost{border-color:var(--line);color:var(--txt);background:var(--panel)}
.btn--ghost:hover{background:var(--panel-2);transform:translateY(-2px)}

.nav__burger{display:none;flex-direction:column;gap:4px;background:transparent;border:0;cursor:pointer;padding:8px}
.nav__burger span{display:block;width:20px;height:2px;background:var(--txt);transition:.25s}
.nav__burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav__burger.is-open span:nth-child(2){opacity:0}
.nav__burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 78px) 0 90px;overflow:hidden}
.hero__glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none}
.hero__glow--a{width:520px;height:520px;background:#0f7a63;top:-140px;left:-120px}
.hero__glow--b{width:560px;height:560px;background:#2a4fd0;top:40px;right:-180px;opacity:.42}
.hero__grid{
  position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 75%);
}
.hero__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  padding:7px 15px;border-radius:999px;border:1px solid rgba(52,224,180,.35);
  background:rgba(52,224,180,.1);color:#8ff0d5;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px var(--teal)}
.hero__title{margin:22px 0 18px;font-size:clamp(34px,5.2vw,60px);font-weight:900;letter-spacing:-.03em}
.hero__title span{display:block}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{color:var(--muted);font-size:16.5px;max-width:620px}
.hero__btns{display:flex;gap:14px;margin:30px 0 38px;flex-wrap:wrap}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:640px}
.hero__stats li{border-left:2px solid rgba(52,224,180,.5);padding-left:12px}
.hero__stats b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em}
.hero__stats span{font-size:12.5px;color:var(--muted)}

/* hero panel */
.hero__panel{position:relative;display:grid;place-items:center}
.panel{
  width:100%;max-width:420px;border-radius:22px;padding:22px;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  box-shadow:0 30px 70px rgba(0,0,0,.45);
  position:relative;z-index:2;
}
.panel__head{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--muted)}
.panel__tag{margin-left:auto;font-size:11.5px;padding:3px 9px;border-radius:999px;background:rgba(79,141,255,.16);color:#9dc0ff;border:1px solid rgba(79,141,255,.3)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--teal)}
.dot--live{box-shadow:0 0 0 0 rgba(52,224,180,.6);animation:ping 1.8s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(52,224,180,0)}100%{box-shadow:0 0 0 0 rgba(52,224,180,0)}}
.panel__list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line);font-size:13.5px}
.panel__list span{color:var(--muted)}
.panel__list b{font-weight:600}
.panel__list b.fast{color:var(--teal)}
.panel__foot{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:12px;color:var(--muted)}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--blue);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}

/* MG.AI 中央算力引擎 */
.panel--engine{background:linear-gradient(165deg,rgba(52,224,180,.12),rgba(79,141,255,.07) 50%,rgba(139,124,255,.1))}
.engine{
  position:relative;height:236px;margin:16px 0 6px;display:grid;place-items:center;
  border-radius:16px;background:radial-gradient(circle at 50% 45%,rgba(52,224,180,.1),transparent 62%);
}
.engine__ring{
  position:absolute;width:170px;height:170px;border-radius:50%;
  border:1px dashed rgba(52,224,180,.35);animation:spin 18s linear infinite;
}
.engine__ring--2{
  width:222px;height:222px;border:1px solid rgba(79,141,255,.22);
  border-top-color:rgba(79,141,255,.7);animation:spin 26s linear infinite reverse;
}
.engine__beam{
  position:absolute;width:100%;height:100%;border-radius:16px;
  background:conic-gradient(from 0deg,transparent 0deg,rgba(52,224,180,.22) 40deg,transparent 90deg);
  animation:spin 9s linear infinite;
}
.engine__core{
  position:relative;z-index:2;width:104px;height:104px;border-radius:50%;
  display:grid;place-items:center;gap:2px;
  background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.14),rgba(8,14,26,.9));
  border:1px solid rgba(52,224,180,.45);
  box-shadow:0 0 0 8px rgba(52,224,180,.06),0 0 46px rgba(52,224,180,.28);
}
.engine__core svg{width:52px;height:52px;animation:coreGlow 2.6s ease-in-out infinite}
.engine__label{font-size:12px;font-weight:800;letter-spacing:.14em;color:#9ff3dc}
@keyframes coreGlow{0%,100%{filter:drop-shadow(0 0 2px rgba(52,224,180,.4))}50%{filter:drop-shadow(0 0 12px rgba(52,224,180,.9))}}
.engine__node{
  position:absolute;z-index:3;font-size:11px;font-weight:700;padding:5px 10px;border-radius:999px;
  background:rgba(8,14,26,.92);border:1px solid var(--line);color:var(--muted);
  display:inline-flex;align-items:center;gap:5px;
}
.engine__node i{font-style:normal;font-size:13px}
.engine__node--cn{left:2%;top:14%;border-color:rgba(52,224,180,.5);color:#9ff3dc}
.engine__node--id{right:2%;top:34%;border-color:rgba(79,141,255,.5);color:#a8c6ff}
.engine__node--sg{right:8%;bottom:8%}
.engine__node--ae{left:8%;bottom:10%}
.engine__node--us{left:46%;top:-2%}
@keyframes spin{to{transform:rotate(360deg)}}

/* 结算亮点 */
.hlt{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:34px}
.hlt__item{
  padding:22px 24px;border-radius:16px;background:var(--panel);border:1px solid var(--line);
  transition:transform .28s,border-color .28s;
}
.hlt__item:hover{transform:translateY(-5px);border-color:rgba(52,224,180,.4)}
.hlt__item b{
  display:block;font-size:24px;font-weight:800;letter-spacing:-.02em;margin-bottom:6px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hlt__item span{font-size:14px;color:var(--muted)}

/* 传统 vs 平台 */
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:stretch;margin-bottom:44px}
.vs__col{padding:26px 26px 22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel)}
.vs__col--new{
  border-color:rgba(52,224,180,.35);
  background:linear-gradient(160deg,rgba(52,224,180,.12),rgba(79,141,255,.05));
  box-shadow:0 20px 50px rgba(0,0,0,.3);
}
.vs__badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--muted);
}
.vs__col--new .vs__badge{background:rgba(52,224,180,.16);border-color:rgba(52,224,180,.4);color:#9ff3dc}
.vs__time{
  font-size:34px;font-weight:900;letter-spacing:-.03em;margin:14px 0 18px;color:#8d99ae;
}
.vs__time span{font-size:22px;margin:0 2px}
.vs__time--fast{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.vs__mid{display:grid;place-items:center;gap:12px;padding:0 4px}
.vs__vs{
  font-size:12px;font-weight:800;letter-spacing:.1em;padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted);
}
.vs__bar{position:relative;width:8px;height:120px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.vs__bar i{
  position:absolute;left:0;right:0;top:0;height:34%;background:var(--grad);
  animation:drop 2.6s ease-in-out infinite;
}
@keyframes drop{0%,100%{height:18%}50%{height:76%}}
.ticks--no li::before{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22)}
.ticks--no li::after{border-color:#8d99ae}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative}
.section--alt{background:linear-gradient(180deg,transparent,var(--bg-2) 18%,var(--bg-2) 82%,transparent)}
.head{max-width:760px;margin-bottom:48px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--teal);text-transform:uppercase}
.h2{margin:12px 0 14px;font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.025em}
.lead{color:var(--muted);font-size:16.5px}

.cards{display:grid;gap:20px}
.cards--3{grid-template-columns:repeat(3,1fr)}
.card{
  padding:28px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);
  transition:transform .3s,border-color .3s,background .3s;
}
.card:hover{transform:translateY(-6px);border-color:rgba(52,224,180,.35);background:var(--panel-2)}
.card__icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px}
.card__icon svg{width:24px;height:24px}
.card__icon--teal{background:rgba(52,224,180,.14);color:var(--teal)}
.card__icon--blue{background:rgba(79,141,255,.14);color:var(--blue)}
.card__icon--violet{background:rgba(139,124,255,.14);color:var(--violet)}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--muted);font-size:14.5px}

/* about */
.section--about{padding-top:34px}
.about{
  position:relative;padding:40px 44px;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(52,224,180,.09),rgba(79,141,255,.05) 45%,rgba(139,124,255,.09));
  box-shadow:0 26px 60px rgba(0,0,0,.32);overflow:hidden;
}
.about::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
}
.about__title{margin:12px 0 20px;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.025em}
.about__body p{font-size:16px;color:#cfd9ea;margin-bottom:14px;max-width:900px}
.about__body p:first-child{font-size:17.5px;color:#e2e9f6;font-weight:500}
.about__body p:last-child{margin-bottom:0}
.about__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}
.about__tags span{
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:#c6d2e4;
}
.about__tags span:first-child{border-color:rgba(52,224,180,.4);color:#8ff0d5;background:rgba(52,224,180,.1)}

/* payments */
.pay{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:start}
.pay__steps{display:grid;gap:14px}
.step{
  display:flex;gap:18px;align-items:flex-start;padding:20px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);transition:transform .25s,border-color .25s;
}
.step:hover{transform:translateX(6px);border-color:rgba(79,141,255,.35)}
.step__n{font-size:15px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;min-width:34px}
.step h4{font-size:16.5px;margin-bottom:5px}
.step p{color:var(--muted);font-size:14px}
.pay__card{
  padding:26px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(52,224,180,.1),rgba(79,141,255,.06));
  position:sticky;top:calc(var(--nav-h) + 24px);
}
.pay__card h4{font-size:18px;margin-bottom:14px}
.pay__badge{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.pay__badge b{font-size:15px;line-height:1.4;color:#fff;letter-spacing:.01em;font-weight:700}

.ticks li{position:relative;padding-left:26px;margin-bottom:11px;font-size:14.5px;color:#cbd5e6}
.ticks li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;
  background:rgba(52,224,180,.16);border:1px solid rgba(52,224,180,.5);
}
.ticks li::after{
  content:"";position:absolute;left:4.5px;top:12px;width:5px;height:2.5px;
  border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg);
}
.ticks--lg li{font-size:15.5px;margin-bottom:13px}

/* tech grid */
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tech{
  padding:22px;border-radius:16px;background:var(--panel);border:1px solid var(--line);
  transition:transform .28s,border-color .28s,background .28s;position:relative;overflow:hidden;
}
.tech::after{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s;
  background:radial-gradient(120% 100% at 0 0,rgba(52,224,180,.14),transparent 60%);
}
.tech:hover{transform:translateY(-6px);border-color:rgba(52,224,180,.4)}
.tech:hover::after{opacity:1}
.tech__no{font-size:12px;font-weight:700;color:var(--teal);letter-spacing:.1em;position:relative;z-index:1}
.tech h4{font-size:16px;margin:10px 0 7px;position:relative;z-index:1}
.tech p{font-size:13.5px;color:var(--muted);position:relative;z-index:1}

/* membership */
.rights{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.right{
  padding:32px 28px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  transition:transform .3s,border-color .3s;
}
.right:hover{transform:translateY(-6px);border-color:rgba(139,124,255,.4)}
.right__num{font-size:30px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px}
.right h3{font-size:20px;margin-bottom:10px}
.right p{color:var(--muted);font-size:14.5px}

/* compliance */
.comp{display:grid;grid-template-columns:1fr .8fr;gap:52px;align-items:center}
.comp__copy .lead{margin-bottom:22px}
.comp__visual{display:grid;place-items:center}
.voucher{
  width:100%;max-width:380px;padding:22px;border-radius:18px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03));
  border:1px solid var(--line);box-shadow:0 30px 60px rgba(0,0,0,.4);
}
.voucher__head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);padding-bottom:12px;border-bottom:1px dashed var(--line);flex-wrap:wrap;gap:6px}
.voucher__no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.voucher__body{padding:6px 0}
.vrow{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.vrow span{color:var(--muted)}
.vrow b{font-weight:600}
.vrow .ok{color:var(--teal)}
.voucher__stamp{
  position:absolute;right:-34px;bottom:22px;transform:rotate(-16deg);
  border:2px solid rgba(52,224,180,.6);color:rgba(52,224,180,.85);
  padding:6px 34px;border-radius:8px;font-size:13px;font-weight:800;letter-spacing:.16em;
  background:rgba(52,224,180,.06);
}

/* timeline */
.timeline{position:relative;display:grid;gap:22px;padding-left:6px}
.timeline::before{content:"";position:absolute;left:16px;top:12px;bottom:12px;width:2px;background:linear-gradient(180deg,var(--teal),var(--blue),var(--violet));opacity:.45}
.tl{position:relative;padding-left:52px}
.tl__dot{position:absolute;left:8px;top:22px;width:18px;height:18px;border-radius:50%;background:var(--bg);border:2px solid var(--teal);box-shadow:0 0 0 4px rgba(52,224,180,.12)}
.tl__card{padding:22px 24px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);transition:transform .25s,border-color .25s}
.tl__card:hover{transform:translateY(-4px);border-color:rgba(52,224,180,.35)}
.tl__phase{font-size:11.5px;font-weight:700;letter-spacing:.14em;color:var(--teal)}
.tl__card h4{font-size:18px;margin:8px 0 7px}
.tl__card p{color:var(--muted);font-size:14.5px}

/* ecosystem */
.eco{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.eco__col{padding:30px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}
.eco__head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.eco__badge{font-size:11px;font-weight:800;letter-spacing:.12em;padding:5px 11px;border-radius:999px}
.eco__badge--gov{background:rgba(79,141,255,.16);color:#9dc0ff;border:1px solid rgba(79,141,255,.3)}
.eco__badge--ppl{background:rgba(52,224,180,.16);color:#8ff0d5;border:1px solid rgba(52,224,180,.3)}
.eco__head h3{font-size:19px}

/* cta */
.cta{padding-bottom:110px}
.cta__box{
  position:relative;overflow:hidden;text-align:center;
  padding:60px 34px;border-radius:26px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(52,224,180,.12),rgba(79,141,255,.08) 55%,rgba(139,124,255,.1));
}
.cta__glow{position:absolute;width:420px;height:420px;border-radius:50%;background:#0f7a63;filter:blur(100px);opacity:.35;left:50%;top:60%;transform:translate(-50%,-50%)}
.cta__box h2{font-size:clamp(24px,3.2vw,36px);font-weight:800;position:relative}
.cta__box p{color:#c3cee0;margin:16px auto 0;max-width:660px;font-size:15.5px;position:relative}
.cta__form{display:flex;gap:10px;justify-content:center;margin:28px auto 0;max-width:520px;flex-wrap:wrap;position:relative}
.cta__form input{
  flex:1;min-width:240px;padding:13px 18px;border-radius:999px;font-size:15px;font-family:inherit;
  background:rgba(6,10,20,.6);border:1px solid var(--line);color:var(--txt);outline:none;transition:border-color .2s;
}
.cta__form input:focus{border-color:rgba(52,224,180,.6)}
.cta__form input::placeholder{color:#6b7891}
.cta__note{margin-top:14px;font-size:13px;color:var(--muted);position:relative}
.cta__note.is-ok{color:var(--teal)}
.cta__note.is-err{color:#ff8a8a}

/* footer */
.footer{border-top:1px solid var(--line);padding:56px 0 28px;background:var(--bg-2)}
.footer__inner{display:grid;grid-template-columns:1.2fr 2fr;gap:40px}
.footer__brand p{color:var(--muted);font-size:14px;margin:14px 0 12px;max-width:340px}
.footer__link{font-size:14px;color:var(--teal)}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer__cols h5{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin-bottom:14px}
.footer__cols a,.footer__cols span{display:block;font-size:14px;color:var(--muted);margin-bottom:9px;transition:color .2s}
.footer__cols a:hover{color:#fff}
.footer__bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#7c879c;
}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .hero__inner{grid-template-columns:1fr;gap:44px}
  .hero__panel{order:-1}
  .engine{height:210px}
  .hlt{grid-template-columns:1fr}
  .vs{grid-template-columns:1fr;gap:14px}
  .vs__mid{padding:2px 0}
  .vs__bar{width:min(240px,60%);height:8px}
  .vs__bar i{top:0;bottom:0;left:0;right:auto;height:auto;width:34%;animation:slideX 2.6s ease-in-out infinite}
  @keyframes slideX{0%,100%{width:18%}50%{width:76%}}
  .cards--3,.rights,.eco,.comp,.pay{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .pay__card{position:static}
  .footer__inner{grid-template-columns:1fr}
}
@media (max-width:760px){
  .nav__links{
    position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:0;
    background:rgba(6,10,20,.98);border-bottom:1px solid var(--line);
    padding:8px 24px 18px;margin:0;display:none;
  }
  .nav__links.is-open{display:flex}
  .nav__links a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav__links a::after{display:none}
  .nav__burger{display:flex}
  .nav__actions .btn{display:none}
  .section{padding:66px 0}
  .section--about{padding-top:24px}
  .about{padding:28px 22px}
  .hero{padding-top:calc(var(--nav-h) + 46px)}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:18px}
  .tech-grid{grid-template-columns:1fr}
  .footer__cols{grid-template-columns:1fr}
  .cta__box{padding:40px 20px}
}

/* ---------- 质感升级 ---------- */
.section{scroll-margin-top:calc(var(--nav-h) + 10px)}

/* 滚动进度条 */
.progress{position:fixed;top:var(--nav-h);left:0;right:0;height:2px;z-index:70;pointer-events:none}
.progress i{display:block;height:100%;width:0;background:var(--grad);box-shadow:0 0 12px rgba(52,224,180,.6);transition:width .1s linear}

/* Hero 入场 */
@keyframes fu{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.hero__copy>*{animation:fu .9s cubic-bezier(.2,.7,.3,1) both}
.hero__copy>*:nth-child(1){animation-delay:.05s}
.hero__copy>*:nth-child(2){animation-delay:.14s}
.hero__copy>*:nth-child(3){animation-delay:.24s}
.hero__copy>*:nth-child(4){animation-delay:.34s}
.hero__copy>*:nth-child(5){animation-delay:.44s}
.hero__panel{animation:fu 1s cubic-bezier(.2,.7,.3,1) .3s both}
.hero__stats li{animation:fu .7s cubic-bezier(.2,.7,.3,1) both}
.hero__stats li:nth-child(1){animation-delay:.5s}
.hero__stats li:nth-child(2){animation-delay:.58s}
.hero__stats li:nth-child(3){animation-delay:.66s}
.hero__stats li:nth-child(4){animation-delay:.74s}

/* Hero 光标柔光 */
.hero__cursor{
  position:absolute;width:520px;height:520px;margin:-260px 0 0 -260px;left:0;top:0;
  border-radius:50%;pointer-events:none;opacity:0;transition:opacity .4s;z-index:0;
  background:radial-gradient(circle,rgba(52,224,180,.16),rgba(79,141,255,.08) 45%,transparent 68%);
}

/* 卡片光标高光 */
.spot{position:relative;overflow:hidden}
.spot::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(240px circle at var(--mx,50%) var(--my,50%),rgba(52,224,180,.16),transparent 62%);
}
.spot:hover::after{opacity:1}

/* 标题装饰 */
.eyebrow{display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--teal))}
.h2{background:linear-gradient(180deg,#fff,#c7d3e6);-webkit-background-clip:text;background-clip:text;color:transparent}

/* CTA 联系邮箱 */
.contact{
  position:relative;margin-top:28px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;
}
.contact__label{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.contact__mail{
  font-size:clamp(17px,2.4vw,25px);font-weight:800;letter-spacing:-.01em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  border-bottom:2px solid transparent;transition:border-color .25s,filter .25s;
}
.contact__mail:hover{border-bottom-color:rgba(52,224,180,.6);filter:drop-shadow(0 0 14px rgba(52,224,180,.35))}

/* 页脚邮箱卡 */
.mailcard{
  grid-column:1/-1;display:flex;align-items:center;gap:16px;
  padding:20px 24px;border-radius:18px;margin-bottom:32px;
  border:1px solid rgba(52,224,180,.28);
  background:linear-gradient(120deg,rgba(52,224,180,.12),rgba(79,141,255,.07));
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.mailcard:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,.35);border-color:rgba(52,224,180,.5)}
.mailcard__icon{
  width:44px;height:44px;flex:none;border-radius:13px;display:grid;place-items:center;
  background:rgba(52,224,180,.14);color:var(--teal);
}
.mailcard__icon svg{width:22px;height:22px}
.mailcard__body{display:grid;gap:2px;min-width:0}
.mailcard__body b{font-size:13px;font-weight:600;color:var(--muted)}
.mailcard__body em{
  font-style:normal;font-size:clamp(16px,2.2vw,22px);font-weight:800;letter-spacing:-.01em;
  word-break:break-all;
}
.mailcard__arrow{margin-left:auto;font-size:20px;color:var(--teal);transition:transform .25s}
.mailcard:hover .mailcard__arrow{transform:translateX(6px)}

/* 回到顶部 */
.totop{
  position:fixed;right:22px;bottom:22px;z-index:65;
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:rgba(10,16,32,.9);border:1px solid var(--line);color:var(--txt);
  opacity:0;pointer-events:none;transform:translateY(10px);transition:.3s;
  backdrop-filter:blur(10px);
}
.totop svg{width:20px;height:20px}
.totop.is-show{opacity:1;pointer-events:auto;transform:none}
.totop:hover{border-color:rgba(52,224,180,.5);color:var(--teal);transform:translateY(-3px)}

@media (max-width:760px){
  .contact{gap:10px}
  .mailcard{padding:18px;gap:12px}
  .mailcard__arrow{display:none}
  .totop{right:14px;bottom:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .hero__copy>*,.hero__panel,.hero__stats li{opacity:1;transform:none}
}