/* ============================================
   极算云图 v4 - Depersonalized Brand Site
   ============================================ */
:root {
    --bg-primary: #0a0b0d;
    --bg-secondary: #0f1114;
    --bg-card: #141619;
    --bg-card-hover: #1a1d22;
    --border-subtle: rgba(255,255,255,0.06);
    --border-glow: rgba(0, 212, 255, 0.2);
    --accent-cyan: #00d4ff;
    --accent-purple: #7c3aed;
    --accent-magenta: #c026d3;
    --accent-red: #ff4d6d;
    --accent-gold: #ffb347;
    --accent-gradient: linear-gradient(135deg, #00d4ff, #7c3aed);
    --accent-gradient-2: linear-gradient(135deg, #7c3aed, #c026d3);
    --accent-gradient-national: linear-gradient(135deg, #ff4d6d, #ffb347);
    --text-primary: #ededed;
    --text-secondary: #b6bcc7;
    --text-muted: #8a92a0;
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --max-w: 1400px;
    --section-py: clamp(56px, 6vw, 88px);
    --px: clamp(20px, 4vw, 48px);
    --glow-cyan: 0 0 20px rgba(0,212,255,0.25);
    --glow-national: 0 0 24px rgba(255,77,109,0.28);
    --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: var(--font-body); background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; overflow-x: hidden; -webkit-font-smoothing: antialiased; font-size: 17px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

#particles-canvas { position: fixed; inset:0; pointer-events: none; z-index:0; opacity: 0.3; }

/* Nav */
.nav { position: fixed; top:0; left:0; right:0; z-index:1000; padding:16px 0; transition: all .3s var(--transition); }
.nav--scrolled { padding:10px 0; background: linear-gradient(180deg, rgba(15,17,20,0.96) 0%, rgba(10,11,13,0.94) 100%); backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4); border-bottom: 1px solid rgba(0,212,255,0.18); box-shadow: 0 8px 32px rgba(0,0,0,0.45), 0 1px 0 rgba(0,212,255,0.08) inset; }
.nav--scrolled .nav__link { color: var(--text-primary); }
.nav--scrolled .nav__logo-icon { filter: drop-shadow(0 0 6px rgba(0,212,255,0.4)); }
.nav__container { max-width: var(--max-w); margin:0 auto; padding: 0 var(--px); display:flex; align-items:center; justify-content:space-between; }
.nav__logo { display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-size:1.2rem; font-weight:700; }
.nav__logo-icon { width:34px; height:34px; color:var(--accent-cyan); }
.nav__logo-text { background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.nav__links { display:flex; gap:36px; }
.nav__link { font-size:1.1rem; color:var(--text-secondary); transition:color .3s; position:relative; font-weight:500; }
.nav__link::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:var(--accent-cyan); transition:width .3s; }
.nav__link:hover { color:var(--text-primary); }
.nav__link:hover::after { width:100%; }
.nav__actions { display:flex; align-items:center; gap:12px; }
.nav__lang { background:transparent; border:1px solid var(--border-glow); color:var(--accent-cyan); font-family:var(--font-mono); font-size:.9rem; padding:5px 14px; border-radius:5px; cursor:pointer; transition:all .3s; }
.nav__lang:hover { background:rgba(0,212,255,0.08); }
.nav__menu-btn { display:none; flex-direction:column; gap:4px; background:none; border:none; cursor:pointer; padding:4px; }
.nav__menu-btn span { width:24px; height:2px; background:var(--text-secondary); transition:all .3s; border-radius:2px; }
.nav__menu-btn.active span:nth-child(1) { transform:rotate(45deg) translate(4px,4px); }
.nav__menu-btn.active span:nth-child(2) { opacity:0; }
.nav__menu-btn.active span:nth-child(3) { transform:rotate(-45deg) translate(4px,-4px); }

/* Hero - centered text-only layout */
.hero { position:relative; min-height:100vh; display:flex; align-items:center; z-index:1; overflow:hidden; }
.hero__grid-bg { position:absolute; inset:0; background-image:linear-gradient(rgba(0,212,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(0,212,255,0.025) 1px,transparent 1px); background-size:60px 60px; mask-image:radial-gradient(ellipse at 50% 50%,black 20%,transparent 75%); -webkit-mask-image:radial-gradient(ellipse at 50% 50%,black 20%,transparent 75%); }
.hero__container { position:relative; max-width:var(--max-w); margin:0 auto; padding:0 var(--px); display:flex; align-items:center; justify-content:center; width:100%; min-height:100vh; padding-top:80px; padding-bottom:40px; }
.hero__container::before { content:''; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:min(720px,90vw); height:min(720px,90vw); background:radial-gradient(ellipse, rgba(0,212,255,0.10) 0%, rgba(124,58,237,0.06) 45%, transparent 70%); border-radius:50%; filter:blur(50px); pointer-events:none; z-index:0; }
.hero__content { position:relative; z-index:2; max-width:960px; text-align:center; animation:fadeInUp .8s var(--transition) both .2s; }
.hero__badge { display:inline-block; font-family:var(--font-mono); font-size:.9rem; letter-spacing:1.8px; text-transform:uppercase; color:var(--accent-cyan); border:1px solid var(--border-glow); padding:7px 18px; border-radius:22px; margin-bottom:28px; background:rgba(0,212,255,0.05); }
.hero__title { font-family:var(--font-display); font-size:clamp(3rem, 6vw, 5rem); font-weight:900; line-height:1.12; margin-bottom:28px; }
.hero__title-line { display:block; }
.hero__title-line--1 { color:var(--text-primary); }
.hero__title-line--2 { background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero__title-line--3 { background:var(--accent-gradient-2); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero__subtitle { font-size:clamp(1.1rem, 1.5vw, 1.3rem); color:var(--text-secondary); margin:0 auto 36px; max-width:720px; line-height:1.75; }

/* Hero meta stats */
.hero__meta { display:flex; align-items:center; justify-content:center; gap:24px; margin-bottom:40px; flex-wrap:wrap; }
.hero__meta-item { display:flex; flex-direction:column; align-items:center; gap:4px; }
.hero__meta-num { font-family:var(--font-display); font-size:clamp(1.8rem, 2.5vw, 2.4rem); font-weight:900; background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; line-height:1; }
.hero__meta-label { font-size:.9rem; color:var(--text-muted); letter-spacing:.5px; }
.hero__meta-sep { width:1px; height:36px; background:linear-gradient(to bottom, transparent, var(--border-glow), transparent); }

.hero__cta { display:flex; gap:16px; flex-wrap:wrap; justify-content:center; }
.btn { display:inline-flex; align-items:center; gap:6px; padding:13px 30px; border-radius:6px; font-size:1.05rem; font-weight:500; cursor:pointer; transition:all .3s var(--transition); border:none; }
.btn--primary { background:var(--accent-gradient); color:#0a0b0d; font-weight:600; }
.btn--primary:hover { box-shadow:var(--glow-cyan); transform:translateY(-2px); }
.btn--ghost { background:transparent; border:1px solid var(--border-glow); color:var(--accent-cyan); }
.btn--ghost:hover { background:rgba(0,212,255,0.06); transform:translateY(-2px); }

/* Section common */
.section { position:relative; z-index:1; padding:var(--section-py) 0; }
.section__container { max-width:var(--max-w); margin:0 auto; padding:0 var(--px); }
.section__header { display:flex; align-items:baseline; gap:14px; margin-bottom:40px; }
.section__number { font-family:var(--font-mono); font-size:.95rem; color:var(--text-muted); }
.section__title { font-family:var(--font-display); font-size:clamp(1.6rem, 2.8vw, 2.2rem); font-weight:700; letter-spacing:0.5px; }

/* About */
.about__grid { display:grid; grid-template-columns:1.4fr 1fr; gap:44px; align-items:start; }
.about__text p { color:var(--text-secondary); margin-bottom:16px; font-size:1.05rem; line-height:1.9; }
.about__text p:last-child { margin-bottom:0; }
.about__meta { display:flex; flex-direction:column; gap:12px; }
.about__pill { display:flex; flex-direction:column; gap:4px; padding:16px 20px; background:var(--bg-card); border:1px solid var(--border-subtle); border-left:3px solid var(--accent-cyan); border-radius:8px; transition:all .3s; }
.about__pill:hover { border-color:var(--border-glow); border-left-color:var(--accent-cyan); background:var(--bg-card-hover); }
.about__pill:nth-child(2) { border-left-color:var(--accent-red); }
.about__pill:nth-child(3) { border-left-color:var(--accent-purple); }
.about__pill:nth-child(4) { border-left-color:var(--accent-gold); }
.about__pill:nth-child(5) { border-left-color:#10b981; }
.about__pill-label { font-family:var(--font-mono); font-size:.78rem; color:var(--text-muted); letter-spacing:1px; text-transform:uppercase; }
.about__pill-value { font-size:1rem; color:var(--text-primary); font-weight:500; line-height:1.55; }

/* Honors - Grouped Card Layout */
.about__honors { margin-top:44px; padding-top:36px; border-top:1px solid var(--border-subtle); }
.about__honors-head { display:flex; align-items:baseline; gap:16px; margin-bottom:24px; flex-wrap:wrap; }
.about__honors-title { font-family:var(--font-mono); font-size:1.1rem; font-weight:500; color:var(--text-primary); letter-spacing:.5px; }
.about__honors-sub { font-family:var(--font-mono); font-size:.85rem; color:var(--text-muted); letter-spacing:1px; }
.honors-layout { display:grid; grid-template-columns:1fr 1.4fr; gap:32px; }
.honors-group__title { font-size:.85rem; font-weight:600; color:var(--accent-cyan); margin-bottom:14px; font-family:var(--font-mono); letter-spacing:1px; text-transform:uppercase; position:relative; padding-left:14px; }
.honors-group__title::before { content:''; position:absolute; left:0; top:50%; transform:translateY(-50%); width:4px; height:14px; background:var(--accent-gradient); border-radius:2px; }
.honors-group__grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(220px, 1fr)); gap:10px; }
.honor-card { display:flex; align-items:center; gap:12px; padding:12px 14px; background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:8px; transition:all .3s var(--transition); }
.honor-card:hover { border-color:var(--border-glow); background:var(--bg-card-hover); transform:translateY(-2px); }
.honor-card__icon { flex:none; width:38px; height:38px; display:flex; align-items:center; justify-content:center; font-size:1.4rem; background:linear-gradient(135deg, rgba(0,212,255,0.08), rgba(124,58,237,0.06)); border-radius:8px; border:1px solid var(--border-subtle); }
.honor-card__body { display:flex; flex-direction:column; gap:2px; min-width:0; flex:1; }
.honor-card__title { font-size:.95rem; color:var(--text-primary); font-weight:500; line-height:1.35; }
.honor-card__year { font-family:var(--font-mono); font-size:.75rem; color:var(--text-muted); letter-spacing:.5px; }
.honor-card--national { background:linear-gradient(135deg, rgba(255,77,109,0.06), rgba(255,179,71,0.03)); border-color:rgba(255,77,109,0.22); }
.honor-card--national:hover { border-color:rgba(255,77,109,0.4); box-shadow:var(--glow-national); }
.honor-card--national .honor-card__icon { background:var(--accent-gradient-national); border-color:transparent; }
.honor-card--national .honor-card__year { color:var(--accent-gold); font-weight:600; }
.honor-card--cert .honor-card__icon { background:linear-gradient(135deg, rgba(0,212,255,0.14), rgba(124,58,237,0.08)); }
.honor-card--cert .honor-card__year { color:var(--accent-cyan); }
.honor-card__img { width:100%; height:100%; object-fit:contain; border-radius:4px; }

/* Skills */
.skills__grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.skill-card { background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:12px; padding:28px; transition:all .3s var(--transition); position:relative; overflow:hidden; }
.skill-card::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:var(--accent-gradient); opacity:0; transition:opacity .3s; }
.skill-card:hover { background:var(--bg-card-hover); border-color:var(--border-glow); transform:translateY(-3px); }
.skill-card:hover::before { opacity:1; }
.skill-card--highlight { border-color:rgba(124,58,237,0.25); background:linear-gradient(135deg,rgba(124,58,237,0.04),rgba(0,212,255,0.04)); }
.skill-card__icon { width:38px; height:38px; color:var(--accent-cyan); margin-bottom:16px; }
.skill-card__icon svg { width:100%; height:100%; }
.skill-card--highlight .skill-card__icon { color:var(--accent-purple); }
.skill-card__title { font-size:1.1rem; font-weight:600; margin-bottom:8px; }
.skill-card__desc { font-size:.95rem; color:var(--text-secondary); line-height:1.65; }

/* Timeline */
.timeline__track { position:relative; padding-left:36px; }
.timeline__track::before { content:''; position:absolute; left:6px; top:0; bottom:0; width:2px; background:linear-gradient(to bottom,var(--accent-cyan),var(--accent-purple),transparent); }
.timeline__item { position:relative; margin-bottom:28px; }
.timeline__item:last-child { margin-bottom:0; }
.timeline__dot { position:absolute; left:-36px; top:24px; width:14px; height:14px; border-radius:50%; background:var(--bg-primary); border:2px solid var(--accent-cyan); z-index:2; }
.timeline__dot--active { background:var(--accent-cyan); box-shadow:var(--glow-cyan); animation:pulse-dot 2s ease-in-out infinite; }
.timeline__dot--national { border-color:var(--accent-red); background:var(--accent-red); box-shadow:var(--glow-national); }
.timeline__card { background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:12px; padding:20px 24px; transition:all .3s; }
.timeline__card:hover { border-color:var(--border-glow); }
.timeline__item--national .timeline__card { border-color:rgba(255,77,109,0.22); background:linear-gradient(135deg, rgba(255,77,109,0.04), rgba(255,179,71,0.03)); }
.timeline__item--national .timeline__card:hover { border-color:rgba(255,77,109,0.4); box-shadow:var(--glow-national); }
.timeline__head { display:flex; align-items:center; justify-content:space-between; gap:14px; margin-bottom:8px; }
.timeline__year { font-family:var(--font-mono); font-size:.9rem; color:var(--accent-cyan); letter-spacing:0.5px; font-weight:500; }
.timeline__item--national .timeline__year { color:var(--accent-red); }
.timeline__logo { height:56px; width:auto; max-width:200px; object-fit:contain; background:rgba(255,255,255,0.92); padding:8px 12px; border-radius:6px; box-shadow:0 2px 8px rgba(0,0,0,0.25); transition:all .3s; }
.timeline__logo:hover { background:#fff; box-shadow:0 4px 12px rgba(0,212,255,0.25); }
.timeline__logos { display:flex; align-items:center; gap:10px; }
.timeline__logos::before { content:'×'; color:var(--text-muted); font-family:var(--font-mono); font-size:1.2rem; order:1; }
.timeline__logos img:first-child { order:0; }
.timeline__logos img:last-child { order:2; }
@media (max-width:640px) { .timeline__logo { height:40px; max-width:160px; padding:5px 8px; } .timeline__logos { gap:6px; } }
.timeline__badge { display:inline-flex; margin-bottom:10px; }
.timeline__badge a, .timeline__badge span { display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:.8rem; letter-spacing:.6px; padding:5px 12px; border-radius:14px; background:var(--accent-gradient-national); color:#0a0b0d; font-weight:600; text-decoration:none; transition:all .3s; }
.timeline__badge a::before, .timeline__badge span::before { content:'★'; font-size:.85rem; }
.timeline__badge a:hover { box-shadow:var(--glow-national); transform:translateY(-1px); }
.timeline__company { font-size:1.15rem; font-weight:600; margin:2px 0 4px; color:var(--text-primary); }
.timeline__project { font-size:1rem; color:var(--accent-cyan); margin-bottom:8px; font-weight:500; }
.timeline__item--national .timeline__project { color:var(--accent-gold); }
.timeline__desc { font-size:.95rem; color:var(--text-secondary); line-height:1.75; }

/* Delivery Capacity (一体化交付能力) */
.delivery__intro { max-width:920px; margin:0 auto 40px; text-align:center; }
.delivery__intro p { color:var(--text-secondary); font-size:1.05rem; line-height:1.85; }
.delivery__intro strong { color:var(--text-primary); font-weight:600; }
.delivery__grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(320px,1fr)); gap:20px; }
.delivery-card { position:relative; background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:14px; padding:26px 28px 24px; transition:all .3s var(--transition); overflow:hidden; }
.delivery-card::before { content:''; position:absolute; top:0; left:0; width:4px; height:100%; background:var(--accent-cyan); transition:width .3s; }
.delivery-card:hover { border-color:var(--border-glow); background:var(--bg-card-hover); transform:translateY(-3px); box-shadow:var(--glow-cyan); }
.delivery-card:hover::before { width:6px; }
.delivery-card--purple::before { background:var(--accent-purple); }
.delivery-card--gold::before { background:var(--accent-gold); }
.delivery-card--red::before { background:var(--accent-red); }
.delivery-card--magenta::before { background:var(--accent-magenta); }
.delivery-card--purple:hover { box-shadow:0 0 24px rgba(124,58,237,0.22); }
.delivery-card--gold:hover { box-shadow:0 0 24px rgba(255,179,71,0.22); }
.delivery-card--red:hover { box-shadow:var(--glow-national); }
.delivery-card--magenta:hover { box-shadow:0 0 24px rgba(192,38,211,0.22); }
.delivery-card__head { display:flex; align-items:center; gap:14px; margin-bottom:14px; }
.delivery-card__icon { flex:none; width:44px; height:44px; display:flex; align-items:center; justify-content:center; font-size:1.4rem; background:linear-gradient(135deg, rgba(0,212,255,0.12), rgba(124,58,237,0.08)); border:1px solid var(--border-subtle); border-radius:10px; }
.delivery-card--purple .delivery-card__icon { background:linear-gradient(135deg, rgba(124,58,237,0.16), rgba(192,38,211,0.08)); }
.delivery-card--gold .delivery-card__icon { background:linear-gradient(135deg, rgba(255,179,71,0.16), rgba(255,77,109,0.06)); }
.delivery-card--red .delivery-card__icon { background:var(--accent-gradient-national); }
.delivery-card--magenta .delivery-card__icon { background:linear-gradient(135deg, rgba(192,38,211,0.16), rgba(124,58,237,0.08)); }
.delivery-card__title { font-size:1.08rem; font-weight:600; color:var(--text-primary); line-height:1.3; }
.delivery-card__sub { font-family:var(--font-mono); font-size:.78rem; color:var(--text-muted); letter-spacing:.6px; margin-top:2px; }
.delivery-card__list { list-style:none; display:flex; flex-direction:column; gap:8px; }
.delivery-card__list li { position:relative; padding-left:18px; font-size:.94rem; color:var(--text-secondary); line-height:1.65; }
.delivery-card__list li::before { content:''; position:absolute; left:0; top:9px; width:8px; height:8px; border:1.5px solid var(--accent-cyan); border-radius:50%; }
.delivery-card--purple .delivery-card__list li::before { border-color:var(--accent-purple); }
.delivery-card--gold .delivery-card__list li::before { border-color:var(--accent-gold); }
.delivery-card--red .delivery-card__list li::before { border-color:var(--accent-red); }
.delivery-card--magenta .delivery-card__list li::before { border-color:var(--accent-magenta); }
.delivery__value { margin-top:44px; padding:28px 32px; background:linear-gradient(135deg, rgba(0,212,255,0.06), rgba(124,58,237,0.05)); border:1px solid rgba(0,212,255,0.18); border-radius:14px; text-align:center; }
.delivery__value-label { display:inline-block; font-family:var(--font-mono); font-size:.78rem; color:var(--accent-cyan); letter-spacing:1.2px; margin-bottom:10px; text-transform:uppercase; padding:4px 10px; background:rgba(0,212,255,0.08); border-radius:4px; }
.delivery__value-text { font-size:1.05rem; color:var(--text-primary); line-height:1.85; max-width:920px; margin:0 auto; }
.delivery__value-text strong { background:var(--accent-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; font-weight:700; }

/* Services */
.services__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:20px; }
.service-card { display:flex; flex-direction:column; gap:10px; background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:12px; padding:26px; transition:all .3s var(--transition); }
.service-card:hover { border-color:var(--border-glow); transform:translateY(-3px); box-shadow:var(--glow-cyan); }
.service-card--placeholder { border-style:dashed; opacity:.5; cursor:default; }
.service-card--placeholder:hover { transform:none; box-shadow:none; }
.service-card__icon { width:32px; height:32px; color:var(--accent-cyan); }
.service-card__icon svg { width:100%; height:100%; }
.service-card__name { font-size:1.05rem; font-weight:600; }
.service-card__desc { font-size:.95rem; color:var(--text-secondary); }
.service-card__url { font-family:var(--font-mono); font-size:.85rem; color:var(--accent-cyan); opacity:.75; }

/* Contact */
.contact__grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:20px; }
.contact-card { display:flex; flex-direction:column; gap:10px; background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:12px; padding:26px; transition:all .3s; }
.contact-card:hover { border-color:var(--border-glow); transform:translateY(-3px); }
.contact-card__icon { width:32px; height:32px; color:var(--accent-cyan); }
.contact-card__icon svg { width:100%; height:100%; }
.contact-card__label { font-size:.95rem; color:var(--text-muted); }
.contact-card__value { font-family:var(--font-mono); font-size:1.05rem; color:var(--text-primary); }

/* Footer */
.footer { position:relative; z-index:1; border-top:1px solid var(--border-subtle); padding:28px 0; }
.footer__container { max-width:var(--max-w); margin:0 auto; padding:0 var(--px); display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:14px; font-size:1rem; color:var(--text-muted); }
.footer__brand { font-weight:500; }
.footer__legal { display:flex; align-items:center; gap:10px; }
.footer__legal a { color:var(--text-muted); transition:color .3s; }
.footer__legal a:hover { color:var(--accent-cyan); }
.footer__sep { opacity:.4; }
.footer__police { display:inline-flex; align-items:center; gap:6px; }
.footer__police-icon { width:18px; height:18px; }
.footer__copy { }

/* Animations */
@keyframes spin { from{transform:rotate(0deg)}to{transform:rotate(360deg)} }
@keyframes pulse-dot { 0%,100%{box-shadow:0 0 0 0 rgba(0,212,255,.4)} 50%{box-shadow:0 0 0 6px rgba(0,212,255,0)} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)} }
[data-reveal] { opacity:0; transform:translateY(20px); transition:opacity .5s var(--transition),transform .5s var(--transition); }
[data-reveal].revealed { opacity:1; transform:translateY(0); }

/* Responsive */
@media(max-width:1024px) {
    .skills__grid { grid-template-columns:repeat(2,1fr); }
    .about__grid { grid-template-columns:1fr; }
    .honors-layout { grid-template-columns:1fr; gap:24px; }
}
@media(max-width:768px) {
    body { font-size:16px; }
    .nav__links { display:none; position:fixed; inset:0; background:rgba(10,11,13,0.98); backdrop-filter:blur(16px); flex-direction:column; align-items:center; justify-content:center; gap:32px; z-index:999; }
    .nav__link { font-size:1.2rem; }
    .nav__links--open { display:flex; }
    .nav__menu-btn { display:flex; z-index:1001; }
    .hero__container { padding-top:100px; }
    .hero__title { font-size:clamp(2.4rem, 8vw, 3rem); }
    .hero__meta { gap:16px; }
    .hero__meta-sep { display:none; }
    .hero__cta { justify-content:center; }
    .about__grid { grid-template-columns:1fr; gap:28px; }
    .skills__grid { grid-template-columns:1fr; }
    .timeline__track { padding-left:28px; }
    .timeline__dot { left:-28px; }
    .timeline__head { flex-direction:column; align-items:flex-start; gap:6px; }
    .footer__container { flex-direction:column; text-align:center; gap:8px; font-size:.9rem; }
}

/* ============ Enhanced Dynamic Effects ============ */

/* Hero title gradient animation */
.hero__title-line { background-size:200% 200%; -webkit-background-clip:text; background-clip:text; }
.hero__title-line--1 { animation:gradientShift 4s ease infinite; }
.hero__title-line--2 { animation:gradientShift 4s ease infinite .5s; }
.hero__title-line--3 { animation:gradientShift 4s ease infinite 1s; }
@keyframes gradientShift { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }

/* Hero badge floating */
.hero__badge { animation:float 3s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }

/* Skill cards interactive hover */
.skill-card { transition:all .4s var(--transition); }
.skill-card:hover { transform:translateY(-6px) scale(1.02); box-shadow:0 12px 40px rgba(0,212,255,0.12), 0 0 0 1px rgba(0,212,255,0.15); }
.skill-card__icon { transition:transform .4s var(--transition); }
.skill-card:hover .skill-card__icon { transform:scale(1.15) rotate(3deg); }

/* Delivery cards interactive hover with glow */
.delivery-card { transition:all .4s var(--transition); }
.delivery-card:hover { transform:translateY(-4px) scale(1.015); box-shadow:0 16px 48px rgba(0,0,0,0.3), 0 0 0 1px rgba(0,212,255,0.12); }
.delivery-card--purple:hover { box-shadow:0 16px 48px rgba(124,58,237,0.15), 0 0 0 1px rgba(124,58,237,0.2); }
.delivery-card--gold:hover { box-shadow:0 16px 48px rgba(255,179,71,0.12), 0 0 0 1px rgba(255,179,71,0.2); }
.delivery-card--red:hover { box-shadow:0 16px 48px rgba(255,77,109,0.12), 0 0 0 1px rgba(255,77,109,0.2); }
.delivery-card--magenta:hover { box-shadow:0 16px 48px rgba(192,38,211,0.12), 0 0 0 1px rgba(192,38,211,0.2); }

/* Timeline card hover lift */
.timeline__card { transition:all .4s var(--transition); }
.timeline__card:hover { transform:translateX(6px); box-shadow:0 8px 32px rgba(0,212,255,0.08); }

/* Timeline dot pulse for current item */
.timeline__dot--active { animation:pulse-dot 2s ease infinite; }

/* Timeline progressive line glow */
.timeline__track::before { transition:background .5s; }
.timeline__item--current .timeline__card { border-color:rgba(0,212,255,0.3); }

/* Button hover effects */
.btn { transition:all .3s var(--transition); position:relative; overflow:hidden; }
.btn::after { content:''; position:absolute; inset:0; background:linear-gradient(135deg, rgba(255,255,255,0.1), transparent); opacity:0; transition:opacity .3s; }
.btn:hover::after { opacity:1; }
.btn--primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,212,255,0.3); }
.btn--ghost:hover { transform:translateY(-2px); background:rgba(0,212,255,0.08); }

/* Honor card hover */
.honor-card { transition:all .3s var(--transition); }
.honor-card:hover { transform:translateY(-3px) scale(1.02); }

/* Contact card hover glow */
.contact-card { transition:all .4s var(--transition); }
.contact-card:hover { transform:translateY(-4px); box-shadow:0 12px 36px rgba(0,212,255,0.15); }

/* Section number counter animation */
.section__number { transition:all .3s; }
.section:hover .section__number { color:var(--accent-cyan); text-shadow:0 0 12px rgba(0,212,255,0.4); }

/* Smooth scroll indicator pulse */
@keyframes scrollPulse { 0%,100%{opacity:0.6;transform:translateY(0)} 50%{opacity:1;transform:translateY(4px)} }

/* Nav link hover underline animation */
.nav__link { position:relative; }
.nav__link::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:var(--accent-gradient); transition:width .3s var(--transition); border-radius:1px; }
.nav__link:hover::after { width:100%; }

/* Delivery value callout subtle glow pulse */
.delivery__value { animation:valuePulse 4s ease-in-out infinite; }
@keyframes valuePulse { 0%,100%{box-shadow:inset 0 0 0 rgba(0,212,255,0)} 50%{box-shadow:inset 0 0 30px rgba(0,212,255,0.03)} }

/* ============ Scroll Progress Indicator ============ */
.scroll-progress { position:fixed; top:0; left:0; right:0; height:3px; z-index:1001; background:transparent; pointer-events:none; }
.scroll-progress__bar { height:100%; width:0%; background:linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-magenta)); box-shadow:0 0 12px rgba(0,212,255,0.5); transition:width .1s linear; border-radius:0 2px 2px 0; }

/* ============ Back to Top Button ============ */
.back-to-top { position:fixed; right:28px; bottom:28px; width:48px; height:48px; border-radius:50%; background:linear-gradient(135deg, rgba(15,17,20,0.9), rgba(20,22,25,0.9)); border:1px solid rgba(0,212,255,0.35); color:var(--accent-cyan); display:flex; align-items:center; justify-content:center; cursor:pointer; z-index:999; opacity:0; visibility:hidden; transform:translateY(20px) scale(0.9); transition:all .4s var(--transition); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); box-shadow:0 8px 24px rgba(0,0,0,0.4); }
.back-to-top.visible { opacity:1; visibility:visible; transform:translateY(0) scale(1); }
.back-to-top:hover { background:linear-gradient(135deg, rgba(0,212,255,0.15), rgba(124,58,237,0.15)); border-color:rgba(0,212,255,0.7); box-shadow:0 12px 32px rgba(0,212,255,0.3), 0 0 0 4px rgba(0,212,255,0.08); transform:translateY(-3px) scale(1.05); }
.back-to-top:active { transform:translateY(0) scale(0.98); }
.back-to-top svg { width:22px; height:22px; stroke:currentColor; stroke-width:2; fill:none; transition:transform .3s; }
.back-to-top:hover svg { transform:translateY(-2px); }
@media(max-width:640px) { .back-to-top { right:16px; bottom:16px; width:42px; height:42px; } .back-to-top svg { width:18px; height:18px; } }