:root{
  --bg:#080b14;
  --bg-soft:#0e1322;
  --bg-alt:#0b0f1b;
  --panel:#131a2b;
  --panel-2:#171f33;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#e8ecf6;
  --text-dim:#9aa6c0;
  --text-mute:#6f7c98;
  --brand:#6d5efc;
  --brand-2:#22d3ee;
  --brand-3:#f472b6;
  --ok:#34d399;
  --warn:#fbbf24;
  --grad:linear-gradient(100deg,var(--brand) 0%,var(--brand-2) 55%,#a78bfa 100%);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.65);
  --maxw:1180px;
  --nav-h:70px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}

.skip-link{position:absolute;left:-9999px;top:0;z-index:99;background:var(--brand);color:#fff;padding:.6rem 1rem;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

.wrap{width:min(var(--maxw),92%);margin-inline:auto}
.wrap.narrow{width:min(880px,92%)}

/* ---------- NAV ---------- */
.nav{
  position:fixed;inset:0 0 auto;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .3s,box-shadow .3s,border-color .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(8,11,20,.82);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  box-shadow:0 8px 30px -18px rgba(0,0,0,.9);
}
.nav-inner{width:min(var(--maxw),92%);margin-inline:auto;display:flex;align-items:center;gap:1.5rem}
.brand{display:flex;align-items:center;gap:.7rem;margin-right:auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad);color:#0a0d18;font-weight:900;font-size:1.05rem;overflow:hidden;
  box-shadow:0 6px 18px -6px rgba(109,94,252,.8);
}
.brand-mark img{width:100%;height:100%;object-fit:cover;object-position:50% 45%}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:1rem}
.brand-text em{font-style:normal;font-size:.72rem;color:var(--text-mute);letter-spacing:.04em}
.menu{display:flex;align-items:center;gap:.35rem}
.menu a{
  padding:.5rem .8rem;border-radius:9px;font-size:.9rem;color:var(--text-dim);
  transition:color .2s,background .2s;
}
.menu a:hover{color:#fff;background:rgba(255,255,255,.06)}
.menu a.active{color:#fff;background:rgba(109,94,252,.2)}
.menu-cta{
  border:1px solid rgba(109,94,252,.5)!important;
  background:rgba(109,94,252,.16)!important;color:#fff!important;font-weight:600;
}
.menu-cta:hover{background:rgba(109,94,252,.3)!important}
.menu-btn{display:none;background:none;border:0;cursor:pointer;padding:.5rem;gap:5px;flex-direction:column}
.menu-btn span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:calc(var(--nav-h) + 60px) 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.orb-1{width:520px;height:520px;background:#4c3df0;top:-140px;left:-120px}
.orb-2{width:440px;height:440px;background:#0ea5b7;bottom:-160px;right:-80px;opacity:.4}
.orb-3{width:300px;height:300px;background:#a21caf;top:40%;right:26%;opacity:.28}
.grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:66px 66px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 75%);
  opacity:.5;
}
.hero-inner{
  position:relative;z-index:1;width:min(var(--maxw),92%);margin-inline:auto;
  display:grid;grid-template-columns:1.35fr .85fr;gap:56px;align-items:center;
}
.badge-row{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.4rem}
.badge{
  display:inline-flex;align-items:center;gap:.45rem;
  padding:.35rem .8rem;border:1px solid var(--line-strong);border-radius:999px;
  font-size:.78rem;color:var(--text-dim);background:rgba(255,255,255,.04);
}
.badge.live{color:#c9f3e4;border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.1)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(52,211,153,.7);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}

.hero-title{font-size:clamp(2.1rem,5.4vw,3.7rem);font-weight:900;letter-spacing:-.03em}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.underline-anim{position:relative;white-space:nowrap}
.underline-anim::after{
  content:"";position:absolute;left:0;bottom:.06em;width:100%;height:.16em;
  background:var(--grad);border-radius:4px;opacity:.5;transform:scaleX(0);transform-origin:left;
  animation:grow 1s .5s cubic-bezier(.2,.8,.2,1) forwards;
}
@keyframes grow{to{transform:scaleX(1)}}
.hero-sub{max-width:36em;color:var(--text-dim);font-size:1.03rem;margin:1.3rem 0 2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem}

.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.82rem 1.5rem;border-radius:12px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
}
.btn-lg{padding:1rem 1.8rem;font-size:1rem}
.btn i.ic{transition:transform .2s;font-style:normal}
.btn:hover i.ic{transform:translateX(4px)}
.btn-primary{background:var(--grad);color:#08101f;box-shadow:0 14px 34px -14px rgba(109,94,252,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px -14px rgba(109,94,252,1)}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-2px)}
.btn-line{border-color:rgba(34,211,238,.45);color:#bff4fb;background:rgba(34,211,238,.07)}
.btn-line:hover{background:rgba(34,211,238,.16);transform:translateY(-2px)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:2.8rem;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:rgba(13,18,32,.85);padding:1.1rem .9rem;text-align:center}
.stat-num{font-size:1.85rem;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.stat-label{font-size:.76rem;color:var(--text-mute);margin-top:.3rem}
.stat-label span{display:block;font-size:.68rem;color:rgba(109,94,252,.85);margin-top:.15rem;letter-spacing:.02em}

.hero-card{position:relative}
.teacher-card{
  background:linear-gradient(170deg,rgba(29,38,63,.95),rgba(15,20,36,.96));
  border:1px solid var(--line-strong);border-radius:22px;padding:0 1.6rem 2rem;
  box-shadow:var(--shadow);text-align:center;overflow:hidden;
}
.teacher-card .tc-tags,.teacher-card .tc-split,.teacher-card .tc-note{margin-inline:0}
.teacher-card .tc-tags{margin-top:1.4rem}
.tc-photo{
  position:relative;margin:0 -1.6rem 1.3rem;aspect-ratio:4/5;overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.tc-photo img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:48% 58%;
  transform:scale(1.02);transition:transform .6s cubic-bezier(.2,.8,.2,1);
}
.teacher-card:hover .tc-photo img{transform:scale(1.05)}
.tc-photo::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(8,11,20,.12) 0%,transparent 34%,rgba(8,11,20,.5) 68%,rgba(8,11,20,.92) 100%);
}
.tc-photo .verified{
  position:absolute;right:1rem;top:1rem;z-index:3;width:30px;height:30px;border-radius:50%;
  background:var(--ok);color:#04241a;display:grid;place-items:center;font-size:.85rem;font-weight:900;
  border:3px solid rgba(15,20,36,.8);font-style:normal;
  box-shadow:0 6px 16px -6px rgba(52,211,153,.9);
}
.tc-caption{position:absolute;left:1.2rem;right:1.2rem;bottom:1rem;z-index:3;text-align:left}
.tc-name{font-size:1.35rem;text-shadow:0 2px 14px rgba(0,0,0,.65)}
.tc-role{color:var(--brand-2);font-size:.82rem;margin:.2rem 0 0;font-weight:600}
.tc-tags{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;margin-bottom:1.4rem}
.tc-tags li{font-size:.72rem;padding:.28rem .62rem;border-radius:8px;background:rgba(109,94,252,.14);border:1px solid rgba(109,94,252,.3);color:#cfd3ff}
.tc-split{display:grid;gap:.55rem;text-align:left;border-top:1px solid var(--line);padding-top:1.1rem}
.tc-split>div{display:flex;justify-content:space-between;gap:.6rem;font-size:.82rem}
.tc-k{color:var(--text-mute)}
.tc-v{color:var(--text);font-weight:600;text-align:right}
.tc-note{font-size:.74rem;color:var(--text-mute);margin:.9rem 0 0;border-top:1px dashed var(--line);padding-top:.8rem}

.scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:.4rem;color:var(--text-mute);font-size:.72rem;
}
.scroll-hint em{font-style:normal;letter-spacing:.18em}
.mouse{width:22px;height:34px;border:1.5px solid var(--text-mute);border-radius:12px;display:flex;justify-content:center;padding-top:6px}
.mouse i{width:3px;height:7px;border-radius:2px;background:var(--brand-2);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-3px)}40%{opacity:1}100%{opacity:0;transform:translateY(8px)}}

/* ---------- MARQUEE ---------- */
.marquee{border-block:1px solid var(--line);background:var(--bg-alt);overflow:hidden;padding:.85rem 0}
.marquee-track{display:flex;gap:2.4rem;width:max-content;animation:slide 34s linear infinite}
.marquee-track span{
  font-size:.82rem;color:var(--text-mute);white-space:nowrap;display:inline-flex;align-items:center;gap:2.4rem;
  letter-spacing:.06em;
}
.marquee-track span::after{content:"◆";font-size:.5rem;color:rgba(109,94,252,.6)}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- SECTIONS ---------- */
.section{padding:clamp(72px,9vw,120px) 0;position:relative}
.section.alt{background:var(--bg-alt);border-block:1px solid var(--line)}
.section-head{max-width:680px;margin-bottom:3.2rem}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:.72rem;letter-spacing:.22em;color:var(--brand-2);
  text-transform:uppercase;margin-bottom:.9rem;font-weight:700;
}
.section-title{font-size:clamp(1.7rem,3.6vw,2.5rem)}
.section-desc{color:var(--text-dim);margin-top:.8rem;font-size:1rem}

/* ---------- ABOUT ---------- */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.about-main p{color:var(--text-dim);font-size:.99rem}
.about-main .lead{color:var(--text);font-size:1.15rem;font-weight:500}
.about-main strong{color:#fff;font-weight:700}
.quote-block{
  margin-top:1.8rem;padding:1.3rem 1.5rem;border-left:3px solid var(--brand);
  background:linear-gradient(90deg,rgba(109,94,252,.12),transparent);border-radius:0 14px 14px 0;
}
.quote-block p{margin:0;color:#dbe0f5;font-size:1.02rem;font-style:italic;font-weight:500}

.fact-card,.highlight-box{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.2rem;
}
.fact-card h3,.highlight-box h3{font-size:1.05rem;margin-bottom:1rem}
.fact-list li{display:flex;justify-content:space-between;gap:1rem;padding:.6rem 0;border-bottom:1px dashed var(--line);font-size:.86rem}
.fact-list li:last-child{border-bottom:0}
.fact-list span{color:var(--text-mute)}
.fact-list b{color:var(--text);font-weight:600;text-align:right}
.highlight-box{background:linear-gradient(165deg,rgba(109,94,252,.16),rgba(34,211,238,.07));border-color:rgba(109,94,252,.3)}
.highlight-box ol{counter-reset:h;display:grid;gap:.85rem}
.highlight-box li{position:relative;padding-left:2.1rem;font-size:.89rem;color:var(--text-dim)}
.highlight-box li::before{
  counter-increment:h;content:counter(h);position:absolute;left:0;top:0;
  width:24px;height:24px;border-radius:8px;background:var(--grad);color:#0a0d18;
  display:grid;place-items:center;font-size:.75rem;font-weight:900;
}
.highlight-box b{color:#fff;display:block;font-size:.92rem;margin-bottom:.1rem}

/* ---------- TIMELINE ---------- */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:calc(50% - 1px);top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,transparent,var(--brand) 8%,var(--brand-2) 92%,transparent);
  opacity:.55;
}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:34px}
.tl-marker{position:absolute;left:50%;top:30px;transform:translateX(-50%);z-index:2}
.tl-marker i{
  display:block;width:15px;height:15px;border-radius:50%;background:var(--bg);
  border:3px solid var(--brand);box-shadow:0 0 0 5px rgba(109,94,252,.16);
}
.tl-item:nth-child(odd) .tl-card{grid-column:1}
.tl-item:nth-child(even) .tl-card{grid-column:2}
.tl-item:nth-child(even) .tl-marker{background:var(--bg)}
.tl-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem 1.6rem;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(109,94,252,.45);box-shadow:var(--shadow)}
.tl-top{display:flex;align-items:center;gap:.7rem;margin-bottom:.7rem;flex-wrap:wrap}
.tl-date{font-size:.78rem;color:var(--brand-2);font-weight:700;letter-spacing:.04em}
.tl-tag{font-size:.68rem;padding:.18rem .55rem;border-radius:6px;border:1px solid var(--line-strong);color:var(--text-dim)}
.tag-teach{background:rgba(109,94,252,.2);border-color:rgba(109,94,252,.5);color:#d5d0ff}
.tag-ai{background:rgba(34,211,238,.15);border-color:rgba(34,211,238,.45);color:#b6f0fa}
.tag-bank{background:rgba(251,191,36,.12);border-color:rgba(251,191,36,.35);color:#fdeab5}
.tag-ins{background:rgba(52,211,153,.12);border-color:rgba(52,211,153,.35);color:#c3f5e0}
.tag-pay{background:rgba(244,114,182,.12);border-color:rgba(244,114,182,.35);color:#fbd0e6}
.tag-edu{background:rgba(255,255,255,.06)}
.tl-card h3{font-size:1.13rem;margin-bottom:.2rem}
.tl-org{color:var(--text-mute);font-size:.85rem;margin-bottom:.9rem}
.tl-points{display:grid;gap:.42rem}
.tl-points li{position:relative;padding-left:1.1rem;font-size:.87rem;color:var(--text-dim)}
.tl-points li::before{content:"";position:absolute;left:0;top:.68em;width:5px;height:5px;border-radius:50%;background:var(--brand)}
.tl-points b{color:#fff}
.tl-edu{background:linear-gradient(160deg,rgba(255,255,255,.05),transparent)}
.tl-dot i{border-color:var(--text-mute);box-shadow:none}

/* ---------- SKILLS ---------- */
.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.skill-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;
  display:flex;flex-direction:column;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.skill-card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.4);box-shadow:var(--shadow)}
.skill-card h3{font-size:1.08rem;margin-bottom:.15rem}
.sc-sub{font-size:.76rem;color:var(--brand-2);margin:.3rem 0 1rem}
.chip-list{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:1.1rem;flex:1}
.chip-list li{font-size:.72rem;padding:.25rem .55rem;border-radius:7px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-dim)}
.bar{height:5px;border-radius:5px;background:rgba(255,255,255,.08);overflow:hidden;margin-bottom:.6rem}
.bar span{display:block;height:100%;width:0;background:var(--grad);border-radius:5px;transition:width 1.2s cubic-bezier(.2,.8,.2,1)}
.reveal.in .bar span,.skill-card.in .bar span{width:var(--w)}
.sc-note{font-size:.76rem;color:var(--text-mute);margin:0}

/* ---------- PROJECTS ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.proj-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;
  transition:transform .3s,border-color .3s,box-shadow .3s;display:flex;flex-direction:column;
}
.proj-card:hover{transform:translateY(-5px);border-color:rgba(109,94,252,.45);box-shadow:var(--shadow)}
.proj-card.featured{grid-column:span 3;background:linear-gradient(150deg,rgba(109,94,252,.18),rgba(34,211,238,.06) 60%,var(--panel));border-color:rgba(109,94,252,.4)}
.pc-flag{align-self:flex-start;font-size:.7rem;padding:.25rem .7rem;border-radius:999px;background:var(--grad);color:#0a0d18;font-weight:800;margin-bottom:.9rem}
.proj-card h3{font-size:1.12rem;margin-bottom:.5rem}
.pc-stack{font-size:.75rem;color:var(--brand-2);margin-bottom:.8rem;letter-spacing:.02em}
.pc-desc{font-size:.88rem;color:var(--text-dim);margin-bottom:1rem}
.pc-takeaways{margin-top:auto;display:grid;gap:.4rem;border-top:1px dashed var(--line);padding-top:.9rem}
.pc-takeaways li{position:relative;padding-left:1.1rem;font-size:.83rem;color:var(--text-dim)}
.pc-takeaways li::before{content:"→";position:absolute;left:0;color:var(--brand)}

/* ---------- COURSE ---------- */
.course{background:radial-gradient(ellipse 80% 55% at 50% 0%,rgba(109,94,252,.14),transparent 70%),var(--bg)}
.gain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:64px}
.gain-card{
  position:relative;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.gain-card:hover{transform:translateY(-6px);border-color:rgba(109,94,252,.5);box-shadow:var(--shadow)}
.gain-card::after{
  content:"";position:absolute;inset:auto -30% -60% auto;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,94,252,.22),transparent 70%);transition:opacity .3s;opacity:0;
}
.gain-card:hover::after{opacity:1}
.gc-no{font-size:2.4rem;font-weight:900;color:rgba(255,255,255,.08);line-height:1;display:block;margin-bottom:.4rem}
.gain-card h3{font-size:1.06rem;margin-bottom:.6rem;position:relative;z-index:1}
.gain-card p{font-size:.88rem;color:var(--text-dim);margin:0;position:relative;z-index:1}
.gc-icon{position:absolute;right:1.2rem;top:1.2rem;font-size:1.5rem;opacity:.55}

.course-detail{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.cd-left h3,.cd-right h3{font-size:1.2rem;margin-bottom:1.4rem}
.outline{display:grid;gap:2px;counter-reset:m}
.outline li{display:flex;gap:1rem;padding:1rem;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line);transition:background .25s,border-color .25s}
.outline li:hover{background:rgba(109,94,252,.1);border-color:rgba(109,94,252,.35)}
.ol-no{flex:none;width:30px;height:30px;border-radius:9px;background:rgba(109,94,252,.22);border:1px solid rgba(109,94,252,.45);color:#d5d0ff;display:grid;place-items:center;font-size:.82rem;font-weight:800}
.outline h4{font-size:.98rem;margin-bottom:.25rem}
.outline p{font-size:.84rem;color:var(--text-dim);margin:0}

.deliver-card,.compare-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;margin-bottom:20px}
.deliver-card{background:linear-gradient(160deg,rgba(34,211,238,.12),var(--panel));border-color:rgba(34,211,238,.3)}
.deliver-card ul{display:grid;gap:.7rem}
.deliver-card li{display:flex;justify-content:space-between;gap:1rem;font-size:.86rem;padding-bottom:.7rem;border-bottom:1px dashed var(--line)}
.deliver-card li:last-child{border-bottom:0;padding-bottom:0}
.deliver-card b{color:#fff}
.deliver-card span{color:var(--text-mute);text-align:right;font-size:.8rem}
.cmp-row{display:grid;grid-template-columns:.7fr 1fr 1fr;gap:.6rem;font-size:.82rem;padding:.6rem 0;border-bottom:1px dashed var(--line)}
.cmp-row:last-child{border-bottom:0}
.cmp-head{color:var(--text-mute);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase}
.cmp-row b{color:var(--text)}
.cmp-row span:first-of-type{color:var(--text-mute)}
.cmp-row span:last-of-type{color:#9ff0d9;font-weight:600}

/* ---------- AUDIENCE ---------- */
.fit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:56px}
.fit-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.fit-card h3{font-size:1.05rem;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.fit-card h3 i{font-style:normal;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;font-size:.8rem;font-weight:900}
.fit-card.yes{border-color:rgba(52,211,153,.35)}
.fit-card.yes h3 i{background:rgba(52,211,153,.18);color:var(--ok)}
.fit-card.no{border-color:rgba(244,114,182,.25)}
.fit-card.no h3 i{background:rgba(244,114,182,.16);color:var(--brand-3)}
.fit-card.prep{border-color:rgba(251,191,36,.28)}
.fit-card.prep h3 i{background:rgba(251,191,36,.15);color:var(--warn)}
.fit-card ul{display:grid;gap:.6rem}
.fit-card li{position:relative;padding-left:1.25rem;font-size:.87rem;color:var(--text-dim)}
.fit-card.yes li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:900}
.fit-card.no li::before{content:"✕";position:absolute;left:0;color:var(--brand-3);font-weight:900;font-size:.78rem;top:.1em}
.fit-card.prep li::before{content:"•";position:absolute;left:.25rem;color:var(--warn);font-weight:900}

.style-band{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem}
.style-band h3{font-size:1.1rem;margin-bottom:1.4rem}
.sb-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sb-grid>div{padding:1.1rem;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.sb-grid span{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--grad);color:#0a0d18;font-weight:900;margin-bottom:.6rem;font-size:.9rem}
.sb-grid b{display:block;font-size:.95rem;margin-bottom:.3rem}
.sb-grid p{font-size:.82rem;color:var(--text-dim);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-list details{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:0;overflow:hidden;
  transition:border-color .25s,background .25s;
}
.faq-list details[open]{border-color:rgba(109,94,252,.45);background:var(--panel-2)}
.faq-list summary{
  cursor:pointer;list-style:none;padding:1.1rem 1.4rem;font-weight:600;font-size:.96rem;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary i{font-style:normal;color:var(--brand-2);font-size:1.25rem;transition:transform .25s;line-height:1}
.faq-list details[open] summary i{transform:rotate(45deg)}
.faq-list details p{padding:0 1.4rem 1.2rem;color:var(--text-dim);font-size:.9rem;margin:0}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(180deg,var(--bg),#0a1020)}
.cta-box{
  background:linear-gradient(140deg,rgba(109,94,252,.28),rgba(34,211,238,.12) 55%,rgba(162,28,175,.14));
  border:1px solid rgba(109,94,252,.4);border-radius:26px;padding:clamp(28px,5vw,56px);
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  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:44px 44px;mask-image:radial-gradient(ellipse at 70% 20%,#000,transparent 70%);
}
.cta-copy,.cta-actions,.cta-meta{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(1.5rem,3.4vw,2.2rem);margin:.7rem 0 .8rem}
.cta-copy p{color:#cfd6ee;max-width:44em;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:1rem;margin:2rem 0}
.cta-meta{display:flex;flex-wrap:wrap;gap:2rem;border-top:1px solid rgba(255,255,255,.14);padding-top:1.3rem}
.cta-meta li{font-size:.86rem;color:#dbe2f5}
.cta-meta span{color:rgba(255,255,255,.5);margin-right:.5rem;font-size:.78rem}

/* ---------- FOOTER ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg-alt);padding:2.2rem 0}
.foot-inner{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--text-mute)}
.foot-inner p{margin:0}
.foot-inner strong{color:var(--text)}
.foot-note{display:block;width:100%;order:3;font-size:.76rem}
.foot-links{display:flex;gap:1.2rem}
.foot-links a:hover{color:var(--brand-2)}

/* ---------- ANCHOR OFFSET ---------- */
section[id],main[id]{scroll-margin-top:calc(var(--nav-h) + 20px)}

/* ---------- OWNER / ROLE ---------- */
.owner{
  display:inline-block;font-size:.66rem;font-weight:900;letter-spacing:.08em;
  padding:.16rem .48rem;border-radius:6px;background:var(--grad);color:#0a0d18;
  margin-right:.5rem;vertical-align:.12em;
}
.role-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:34px;
}
.rb-item{
  background:linear-gradient(150deg,rgba(109,94,252,.16),rgba(20,26,44,.9));
  border:1px solid rgba(109,94,252,.32);border-radius:14px;padding:1rem 1.1rem;
}
.rb-item b{display:block;font-size:.92rem;margin-bottom:.25rem}
.rb-item span{font-size:.78rem;color:var(--text-dim)}

/* ---------- PROJECTS (4 merged) ---------- */
.proj-grid.four{grid-template-columns:repeat(3,1fr)}
.pc-modules{display:grid;gap:.5rem;margin-bottom:1.1rem}
.pc-modules li{
  display:flex;justify-content:space-between;align-items:baseline;gap:.8rem;
  padding:.6rem .85rem;border-radius:10px;background:rgba(255,255,255,.035);
  border:1px solid var(--line);border-left:2px solid var(--brand);
}
.pc-modules b{font-size:.85rem;color:#fff;font-weight:600;flex:none}
.pc-modules span{font-size:.76rem;color:var(--text-mute);text-align:right}
.proj-card.alipay .pc-modules li{border-left-color:var(--brand-2)}
.proj-card.ins .pc-modules li{border-left-color:var(--ok)}
.proj-card.bank .pc-modules li{border-left-color:var(--warn)}
.pc-role{
  font-size:.78rem;color:#f0e6c0;background:rgba(251,191,36,.08);
  border:1px solid rgba(251,191,36,.28);border-radius:9px;padding:.5rem .75rem;margin-bottom:.9rem;
}
.proj-card.alipay{border-color:rgba(34,211,238,.35);background:linear-gradient(160deg,rgba(34,211,238,.1),var(--panel) 60%)}
.proj-card.ins{border-color:rgba(52,211,153,.25)}
.proj-card.bank{border-color:rgba(251,191,36,.22)}
.pc-metrics{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:1rem}
.pc-metrics li{
  display:flex;align-items:baseline;gap:.4rem;font-size:.76rem;color:var(--text-mute);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:9px;padding:.4rem .7rem;
}
.pc-metrics b{font-size:1.05rem;font-weight:900;color:#fff;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.proj-foot{margin-top:26px;font-size:.8rem;color:var(--text-mute);text-align:center}

/* ---------- TIMELINE FEATURED ---------- */
.tl-featured{
  background:linear-gradient(155deg,rgba(34,211,238,.14),rgba(109,94,252,.1) 45%,var(--panel));
  border-color:rgba(34,211,238,.42);box-shadow:0 20px 50px -26px rgba(34,211,238,.5);
}
.tl-featured h3{font-size:1.22rem}
.tag-star{background:rgba(251,191,36,.14);border-color:rgba(251,191,36,.4);color:#fdeab5}
.tl-org{display:flex;align-items:center;flex-wrap:wrap;gap:.3rem}

/* ---------- CERTS ---------- */
.cert-band{
  margin-top:40px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem;
}
.cb-head{margin-bottom:1.4rem}
.cb-head h3{font-size:1.2rem}
.cb-head p{font-size:.86rem;color:var(--text-dim);margin:.3rem 0 0}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cert-card{
  display:flex;gap:.9rem;padding:1.1rem;border-radius:14px;
  background:linear-gradient(150deg,rgba(251,191,36,.09),rgba(255,255,255,.03));
  border:1px solid rgba(251,191,36,.24);
}
.cert-seal{
  flex:none;width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,#f5c45a,#d99a2b);color:#3a2a05;font-weight:900;font-size:1.05rem;
  box-shadow:0 8px 20px -8px rgba(245,196,90,.7);
}
.cert-card h4{font-size:.95rem;margin-bottom:.2rem}
.cert-sub{font-size:.76rem;color:var(--text-mute);margin:0 0 .5rem}
.cert-tags{display:flex;flex-wrap:wrap;gap:.35rem}
.cert-tags li{font-size:.7rem;padding:.2rem .5rem;border-radius:6px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-dim)}
.cert-note{margin:1.2rem 0 0;font-size:.84rem;color:var(--text-dim);border-top:1px dashed var(--line);padding-top:1rem}

/* ---------- PHOTO MOSAIC ---------- */
.mosaic{columns:2;column-gap:16px;margin-bottom:34px}
.shot{
  position:relative;display:block;break-inside:avoid;margin:0 0 16px;
  border-radius:14px;overflow:hidden;background:#05070f;border:1px solid var(--line);
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.shot:hover{transform:translateY(-4px);border-color:rgba(109,94,252,.5);box-shadow:var(--shadow)}
.shot img,.shot video{width:100%;height:auto;display:block;background:#05070f}
.shot.vid.gym video{aspect-ratio:16/9;object-fit:cover}
.shot.vid.ski video{aspect-ratio:3/4;object-fit:cover}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:3;padding:1.6rem .85rem .7rem;
  background:linear-gradient(transparent,rgba(5,7,15,.92));display:flex;flex-direction:column;gap:.1rem;
}
.shot figcaption b{font-size:.85rem;color:#fff;font-weight:600}
.shot figcaption span{font-size:.72rem;color:var(--text-dim)}
.shot.vid figcaption{
  top:0;bottom:auto;padding:.7rem 4.4rem 2rem .85rem;
  background:linear-gradient(rgba(5,7,15,.92),transparent);
}
.shot-badge{
  position:absolute;right:.6rem;top:.6rem;z-index:4;font-size:.66rem;font-weight:800;letter-spacing:.06em;
  padding:.2rem .5rem;border-radius:6px;background:rgba(8,11,20,.75);color:#bff4fb;
  border:1px solid rgba(34,211,238,.4);
}

.life-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.life-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem}
.life-card h3{font-size:1.08rem;margin-bottom:1.1rem}
.life-list{display:grid;gap:.75rem}
.life-list li{display:flex;justify-content:space-between;gap:1rem;font-size:.86rem;padding-bottom:.7rem;border-bottom:1px dashed var(--line)}
.life-list li:last-child{border-bottom:0;padding-bottom:0}
.life-list b{color:#fff}
.life-list span{color:var(--text-mute);text-align:right;font-size:.8rem}
.life-map{display:grid;gap:.7rem}
.life-map>div{display:grid;grid-template-columns:1fr auto 1fr;gap:.6rem;align-items:center;padding:.7rem .9rem;border-radius:11px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.life-map span{font-size:.83rem;color:var(--text-dim)}
.life-map i{font-style:normal;color:var(--brand-2);font-weight:900}
.life-map b{font-size:.86rem;color:#fff}
.life-map p{grid-column:1/-1;font-size:.78rem;color:var(--text-mute);margin:.3rem 0 0}
.tags-card{grid-column:span 2;background:linear-gradient(150deg,rgba(109,94,252,.12),var(--panel))}
.tag-cloud{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.2rem}
.tag-cloud li{font-size:.78rem;padding:.35rem .75rem;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-strong);color:var(--text-dim)}

/* ---------- CROSS INDUSTRY ---------- */
.cross-band{
  margin-bottom:56px;background:linear-gradient(155deg,rgba(34,211,238,.09),var(--panel) 55%);
  border:1px solid rgba(34,211,238,.26);border-radius:var(--radius);padding:1.8rem;
}
.cb-head{margin-bottom:1.4rem;max-width:56em}
.cb-head h3{font-size:1.25rem}
.cb-head p{font-size:.88rem;color:var(--text-dim);margin:.4rem 0 0}
.cross-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.cb-row{
  display:grid;grid-template-columns:1fr auto 1fr;gap:.6rem;align-items:center;
  padding:.85rem 1rem;border-radius:12px;background:rgba(255,255,255,.035);border:1px solid var(--line);
  transition:border-color .25s,background .25s,transform .25s;
}
.cb-row:hover{border-color:rgba(34,211,238,.4);background:rgba(34,211,238,.06);transform:translateY(-2px)}
.cb-row i{font-style:normal;color:var(--brand-2);font-weight:900}
.cb-from{font-size:.83rem;color:var(--text-dim)}
.cb-to{font-size:.85rem;color:#fff;font-weight:600}
.cb-row b{
  grid-column:1/-1;font-size:.72rem;font-weight:700;letter-spacing:.06em;color:#9ff0d9;
  background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.28);border-radius:6px;
  padding:.16rem .5rem;justify-self:start;margin-top:.15rem;
}
.cb-note{margin:1.4rem 0 0;padding-top:1.1rem;border-top:1px dashed var(--line);font-size:.88rem;color:var(--text-dim)}
.cb-note strong{color:#fff}

/* ---------- SERVICE ---------- */
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:34px}
.svc-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem;
  display:flex;flex-direction:column;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.svc-card:hover{transform:translateY(-5px);border-color:rgba(109,94,252,.45);box-shadow:var(--shadow)}
.svc-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.9rem}
.svc-top h3{font-size:1.2rem}
.svc-tag{
  font-size:.72rem;font-weight:800;padding:.24rem .62rem;border-radius:7px;flex:none;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.4);color:#a8eefb;
}
.svc-tag.hot{background:rgba(244,114,182,.12);border-color:rgba(244,114,182,.4);color:#fbcbe4}
.svc-desc{font-size:.88rem;color:var(--text-dim);margin-bottom:1.2rem}
.svc-list{display:grid;gap:.6rem;margin-bottom:1.3rem;flex:1}
.svc-list li{
  display:flex;justify-content:space-between;align-items:baseline;gap:1rem;
  padding:.62rem .8rem;border-radius:10px;background:rgba(255,255,255,.035);border:1px solid var(--line);
}
.svc-list b{font-size:.85rem;color:#fff;flex:none}
.svc-list span{font-size:.78rem;color:var(--text-mute);text-align:right}
.svc-foot{
  display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;
  border-top:1px dashed var(--line);padding-top:1rem;font-size:.8rem;
}
.svc-deliver{color:#9ff0d9;font-weight:600}
.svc-time{color:var(--text-mute)}

.svc-flow{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem;margin-bottom:22px}
.svc-flow h3{font-size:1.1rem;margin-bottom:1.3rem}
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:f}
.flow li{position:relative;padding:1rem .9rem;border-radius:12px;background:rgba(255,255,255,.035);border:1px solid var(--line)}
.flow li::after{
  content:"›";position:absolute;right:-11px;top:50%;transform:translateY(-50%);z-index:2;
  color:var(--brand-2);font-size:1.2rem;font-weight:900;
}
.flow li:last-child::after{display:none}
.flow span{
  display:inline-block;font-size:.68rem;font-weight:900;letter-spacing:.1em;color:var(--brand-2);
  margin-bottom:.4rem;opacity:.85;
}
.flow b{display:block;font-size:.92rem;margin-bottom:.3rem}
.flow p{font-size:.78rem;color:var(--text-dim);margin:0}

.svc-fit{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.sf-col{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.sf-col h4{display:flex;align-items:center;gap:.5rem;font-size:1rem;margin-bottom:1rem}
.sf-col h4 i{
  font-style:normal;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;
  font-size:.78rem;font-weight:900;flex:none;
}
.sf-col:first-child{border-color:rgba(52,211,153,.3)}
.sf-col:first-child h4 i{background:rgba(52,211,153,.18);color:var(--ok)}
.sf-col:last-child{border-color:rgba(251,191,36,.28)}
.sf-col:last-child h4 i{background:rgba(251,191,36,.15);color:var(--warn)}
.sf-col ul{display:grid;gap:.55rem}
.sf-col li{position:relative;padding-left:1.15rem;font-size:.85rem;color:var(--text-dim)}
.sf-col:first-child li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:900}
.sf-col:last-child li::before{content:"—";position:absolute;left:0;color:var(--warn)}

/* ---------- REVEAL ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .75s cubic-bezier(.2,.8,.2,1),transform .75s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
.delay-1{transition-delay:.1s}
.delay-2{transition-delay:.2s}
.delay-3{transition-delay:.3s}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-card{max-width:420px}
  .about-grid,.course-detail{grid-template-columns:1fr;gap:32px}
  .skill-grid,.gain-grid,.proj-grid,.fit-grid{grid-template-columns:repeat(2,1fr)}
  .proj-grid.four{grid-template-columns:repeat(2,1fr)}
  .proj-card.featured{grid-column:span 2}
  .sb-grid{grid-template-columns:repeat(2,1fr)}
  .role-band{grid-template-columns:repeat(2,1fr)}
  .mosaic{columns:2}
  .cert-grid{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .svc-grid,.svc-fit{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow li::after{display:none}
  .life-grid{grid-template-columns:1fr}
  .tags-card{grid-column:span 1}
  .flow{grid-template-columns:1fr}
}
@media (max-width:760px){
  :root{--nav-h:62px}
  .menu{
    position:fixed;inset:var(--nav-h) 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:#080b14;border-bottom:1px solid var(--line);
    padding:.8rem 5% 1.4rem;transform:translateY(-130%);transition:transform .35s;
  }
  .menu.open{transform:none}
  .menu a{padding:.85rem .4rem;border-bottom:1px solid var(--line);border-radius:0}
  .menu a:last-child{border-bottom:0}
  .menu-cta{text-align:center;margin-top:.8rem;border-radius:10px!important;border-bottom:1px solid rgba(109,94,252,.5)!important}
  .menu-btn{display:flex}
  .brand-text em{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .timeline::before{left:7px}
  .tl-item{grid-template-columns:1fr;gap:0;padding-left:30px}
  .tl-item .tl-card,.tl-item:nth-child(even) .tl-card{grid-column:1}
  .tl-marker{left:7px;transform:translateX(-50%)}
  .skill-grid,.gain-grid,.proj-grid,.fit-grid,.sb-grid{grid-template-columns:1fr}
  .proj-grid.four{grid-template-columns:1fr}
  .proj-card.featured{grid-column:span 1}
  .proj-card.featured .pc-metrics{gap:8px}
  .role-band{grid-template-columns:1fr}
  .mosaic{columns:2;column-gap:10px}
  .shot{border-radius:12px}
  .shot figcaption{padding:1.2rem .7rem .55rem}
  .shot figcaption b{font-size:.78rem}
  .shot figcaption span{font-size:.68rem}
  .shot.vid figcaption{padding:.55rem 3.4rem 1.6rem .7rem}
  .cmp-row{grid-template-columns:.65fr 1fr 1fr;font-size:.76rem}
  .cta-meta{gap:1rem;flex-direction:column}
  .hero{min-height:auto}
  .scroll-hint{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}