/* ═══════════════════════════════════════════════════
   青森环保 · 官网设计系统
   QINGSEN ENVIRONMENTAL · DESIGN SYSTEM
   Theme: Eco-Industrial Editorial / 明亮森林绿
   ═══════════════════════════════════════════════════ */

/* ── CSS Custom Properties ─────────────────────── */
:root {
  /* Palette */
  --ink: #0d1f16;
  --ink-rgb: 13, 31, 22;
  --ink-tint: #1a4633;
  --ink-tint-rgb: 26, 70, 51;
  --paper: #f9f7f3;
  --paper-rgb: 249, 247, 243;
  --paper-tint: #edf5f0;
  --paper-tint-rgb: 237, 245, 240;
  --accent: #2ea85a;
  --accent-rgb: 46, 168, 90;
  --accent-glow: #5ddb8a;
  --accent-glow-rgb: 93, 219, 138;
  --white: #ffffff;
  --border-subtle: rgba(13, 31, 22, 0.06);
  --border-medium: rgba(13, 31, 22, 0.12);
  --border-glow: rgba(46, 168, 90, 0.25);

  /* Typography */
  --serif: "Noto Serif SC", "Playfair Display", "Georgia", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;

  /* Type Scale — clamp for fluid responsive */
  --text-hero: clamp(2.2rem, 5vw, 4rem);
  --text-h1: clamp(2.2rem, 5vw, 4.5rem);
  --text-h2: clamp(1.6rem, 3.5vw, 3rem);
  --text-h3: clamp(1.2rem, 2.2vw, 1.8rem);
  --text-lead: clamp(0.95rem, 1.2vw, 1.1rem);
  --text-body: clamp(0.88rem, 1vw, 1rem);
  --text-sm: 0.8rem;
  --text-xs: 0.7rem;
  --text-2xs: 0.62rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;
  --section-py: clamp(4rem, 8vh, 10rem);
  --section-px: clamp(1.5rem, 5vw, 6rem);

  /* Layout */
  --content-max: 1280px;
  --content-wide: 1440px;
  --nav-height: 72px;

  /* Corners & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.1), 0 4px 12px rgba(0,0,0,.06);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.15), 0 8px 20px rgba(0,0,0,.1);
  --shadow-glow: 0 8px 32px rgba(46,168,90,.25);
  --shadow-glow-lg: 0 16px 48px rgba(46,168,90,.3);

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 350ms;
  --duration-slow: 600ms;
  --duration-reveal: 800ms;

  /* Z-index */
  --z-base: 1;
  --z-content: 10;
  --z-nav: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --z-canvas: 0;
}

/* ── Reset ─────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  font-size:var(--text-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

/* ── Scrollbar ─────────────────────────────────── */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--paper-tint)}
::-webkit-scrollbar-thumb{background:var(--accent);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--ink-tint)}

/* ── Selection ─────────────────────────────────── */
::selection{background:rgba(var(--accent-rgb),.25);color:var(--ink)}
::-moz-selection{background:rgba(var(--accent-rgb),.25);color:var(--ink)}

/* ── Focus ─────────────────────────────────────── */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

/* ═══════════ NAVIGATION ══════════════════════════ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:var(--z-nav);
  height:var(--nav-height);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--section-px);
  transition:background .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo),
             backdrop-filter .35s var(--ease-out-expo);
  background:transparent;
}
.nav.scrolled{
  background:rgba(var(--paper-rgb),.88);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  box-shadow:0 1px 0 var(--border-subtle);
}
.nav.dark{color:var(--white)}
.nav.dark .nav-link{color:rgba(255,255,255,.75)}
.nav.dark .nav-link:hover,.nav.dark .nav-link.active{color:var(--accent-glow)}
.nav.dark.scrolled{
  background:rgba(var(--ink-rgb),.92);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  box-shadow:0 1px 0 rgba(255,255,255,.06);
}

.nav-brand{
  display:flex;align-items:center;gap:.75rem;
  text-decoration:none;color:inherit;z-index:calc(var(--z-nav) + 1);
}
.nav-brand img{height:36px;width:auto}
.nav-brand span{
  font-family:var(--serif);font-size:1.1rem;font-weight:700;
  letter-spacing:-.01em;white-space:nowrap;
}

.nav-links{display:flex;gap:.25rem;align-items:center;list-style:none}
.nav-link{
  text-decoration:none;color:rgba(var(--ink-rgb),.65);
  font-size:var(--text-sm);font-weight:500;padding:.5rem 1rem;
  border-radius:var(--radius-sm);
  transition:color var(--duration-fast),background var(--duration-fast);
  letter-spacing:.02em;position:relative;
}
.nav-link:hover,.nav-link.active{color:var(--accent)}
.nav-link::after{
  content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%) scaleX(0);
  width:20px;height:2px;background:var(--accent);border-radius:1px;
  transition:transform var(--duration-normal) var(--ease-out-expo);
}
.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}

.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;
  padding:.5rem;z-index:calc(var(--z-nav) + 1);color:inherit;
}
.nav-toggle span{
  display:block;width:24px;height:2px;background:currentColor;
  margin:5px 0;transition:transform .3s,opacity .3s;
  border-radius:1px;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ── Mobile Nav ────────────────────────────────── */
@media(max-width:768px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:280px;
    flex-direction:column;gap:.5rem;padding:calc(var(--nav-height) + 1rem) 1.5rem 2rem;
    background:var(--paper);box-shadow:var(--shadow-xl);
    transform:translateX(100%);transition:transform .4s var(--ease-out-expo);
    align-items:flex-start;
  }
  .nav.dark .nav-links{background:var(--ink-tint)}
  .nav-links.open{transform:translateX(0)}
  .nav-link{font-size:1rem;padding:.75rem 0;width:100%}
  .nav-link::after{display:none}
  .nav-toggle{display:block}
}

/* ═══════════ SECTION LAYOUTS ═════════════════════ */
.section{
  padding:var(--section-py) var(--section-px);
  position:relative;overflow:hidden;
}
.section-inner{
  width:100%;max-width:var(--content-max);margin:0 auto;
  position:relative;z-index:var(--z-content);
}
.section-inner.wide{max-width:var(--content-wide)}

/* Section Themes */
.section-light{background:var(--paper);color:var(--ink)}
.section-tint{background:var(--paper-tint);color:var(--ink)}
.section-dark{background:var(--ink-tint);color:#e0ede6}
.section-deep{background:var(--ink);color:#f0f5f2}

/* Section Dividers */
.section-divider{
  border:none;height:1px;background:var(--border-subtle);
  max-width:var(--content-max);margin:0 auto;
}

/* Hero BG effects */
.hero-bg{
  position:absolute;inset:0;z-index:var(--z-canvas);pointer-events:none;
}
.hero-bg.radial-green{
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(var(--accent-rgb), .15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 70%, rgba(var(--accent-glow-rgb), .08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 80% 20%, rgba(var(--accent-rgb), .1) 0%, transparent 50%);
}
.hero-bg.radial-light{
  background:
    radial-gradient(ellipse 70% 50% at 30% 50%, rgba(var(--accent-rgb), .06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 70% at 70% 30%, rgba(var(--ink-tint-rgb), .04) 0%, transparent 50%);
}
.hero-bg.particles{position:absolute;inset:0;z-index:calc(var(--z-canvas) + 1)}

/* ═══════════ TYPOGRAPHY ══════════════════════════ */
.h-hero{
  font-family:var(--serif);font-size:var(--text-hero);
  font-weight:900;letter-spacing:-.025em;line-height:1.06;
}
.h1{
  font-family:var(--serif);font-size:var(--text-h1);
  font-weight:700;letter-spacing:-.015em;line-height:1.12;
}
.h2{
  font-family:var(--serif);font-size:var(--text-h2);
  font-weight:600;letter-spacing:-.01em;line-height:1.2;
}
.h3{
  font-family:var(--serif);font-size:var(--text-h3);
  font-weight:500;line-height:1.3;
}

.kicker{
  font-family:var(--mono);font-size:var(--text-2xs);font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);
  margin-bottom:.8rem;
}
.section-dark .kicker,.section-deep .kicker{color:var(--accent-glow)}

.lead{
  font-size:var(--text-lead);line-height:1.7;
  color:rgba(var(--ink-rgb),.65);max-width:680px;
}
.section-dark .lead,.section-deep .lead{color:rgba(255,255,255,.6)}

.body-text{
  font-size:var(--text-body);line-height:1.7;
  color:rgba(var(--ink-rgb),.6);
}
.section-dark .body-text,.section-deep .body-text{color:rgba(255,255,255,.5)}

.meta{
  font-family:var(--mono);font-size:.85rem;
  color:rgba(var(--ink-rgb),.4);letter-spacing:.04em;
}
.section-dark .meta,.section-deep .meta{color:rgba(255,255,255,.3)}

.accent-text{color:var(--accent)}
.section-dark .accent-text,.section-deep .accent-text{color:var(--accent-glow)}

.text-center{text-align:center}
.text-gradient{
  background:linear-gradient(135deg,var(--accent),var(--accent-glow));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}

/* ── Inline Decorative Divider ─────────────────── */
.divider-line{
  width:60px;height:2px;background:var(--accent);
  margin:0 auto;border-radius:1px;
}
.section-dark .divider-line,.section-deep .divider-line{background:var(--accent-glow)}

/* ═══════════ GRID SYSTEMS ════════════════════════ */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.grid-2-7-5{display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.grid-2-4-8{display:grid;grid-template-columns:1fr 2fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.grid-2-8-4{display:grid;grid-template-columns:2fr 1fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}
.grid-6{display:grid;grid-template-columns:repeat(6,1fr);gap:1rem}
.grid-8{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}

/* Responsive Grids */
@media(max-width:1024px){
  .grid-2,.grid-2-7-5,.grid-2-4-8,.grid-2-8-4{grid-template-columns:1fr;gap:2.5rem}
  .grid-4,.grid-5,.grid-6{grid-template-columns:repeat(2,1fr)}
  .grid-8{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .grid-3,.grid-4,.grid-5,.grid-6,.grid-8{grid-template-columns:1fr}
}

/* ═══════════ STAT CARDS ══════════════════════════ */
.stat-card{
  text-align:center;padding:2rem 1.5rem;
  position:relative;cursor:default;
}
.stat-nb{
  font-family:var(--serif);
  font-size:clamp(2.5rem,5vw,4.5rem);
  font-weight:900;color:var(--accent);line-height:1;
  font-feature-settings:"tnum";font-variant-numeric:tabular-nums;
}
.section-dark .stat-nb,.section-deep .stat-nb{color:var(--accent-glow)}
.stat-unit{font-size:.45em;font-weight:500;opacity:.8}
.stat-label{
  font-size:var(--text-xs);color:rgba(var(--ink-rgb),.45);
  margin-top:.4rem;letter-spacing:.06em;text-transform:uppercase;
  font-weight:500;
}
.section-dark .stat-label,.section-deep .stat-label{color:rgba(255,255,255,.35)}

/* ═══════════ CARD COMPONENTS ═════════════════════ */
/* Paper Card */
.card{
  background:var(--white);
  padding:1.8rem;
  border:1px solid var(--border-subtle);
  border-radius:var(--radius-md);
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
  position:relative;overflow:hidden;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:var(--border-medium);
}
.card::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:3px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease-out-expo);
}
.card:hover::after{transform:scaleX(1)}

/* Accent Card */
.card-accent{
  background:var(--accent);color:var(--white);
  padding:1.8rem;border-radius:var(--radius-md);
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
}
.card-accent:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-glow);
}
.card-accent .body-text{color:rgba(255,255,255,.8)}

/* Dark Card */
.card-dark{
  background:rgba(255,255,255,.05);
  padding:1.8rem;
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-md);
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
}
.card-dark:hover{
  transform:translateY(-6px);
  box-shadow:0 12px 36px rgba(0,0,0,.3);
  border-color:rgba(255,255,255,.15);
}

/* Tinted Card */
.card-tint{
  background:var(--paper-tint);
  padding:1.8rem;border-radius:var(--radius-md);
  border:1px solid var(--border-subtle);
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
}
.card-tint:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
}

/* Card with icon */
.card-icon{font-size:2rem;margin-bottom:.8rem;display:block}
.card-title{
  font-weight:600;font-size:1rem;margin-bottom:.5rem;
  font-family:var(--sans);
}
.card-desc{font-size:var(--text-sm);color:rgba(var(--ink-rgb),.55);line-height:1.55}

/* Cards inside dark sections */
.section-dark .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.06);color:#e0ede6}
.section-dark .card:hover{box-shadow:0 12px 36px rgba(0,0,0,.25);border-color:rgba(255,255,255,.12)}
.section-dark .card .card-desc{color:rgba(255,255,255,.5)}
.card-dark .card-desc,.section-deep .card-dark .card-desc{color:#5ddb8a;font-weight:500}

/* ═══════════ COMPARISON CARDS ════════════════════ */
.compare-win{
  background:var(--accent);color:var(--white);
  text-align:center;padding:1.8rem 1.4rem 2.2rem;
  border-radius:var(--radius-md);position:relative;
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
}
.compare-win:hover{transform:translateY(-6px);box-shadow:var(--shadow-glow)}
.compare-win .body-text{color:rgba(255,255,255,.85)}

.compare-lose{
  background:rgba(var(--ink-rgb),.03);
  text-align:center;padding:1.8rem 1.4rem 2.2rem;
  border-radius:var(--radius-md);
  transition:transform .3s var(--ease-out-expo),
             box-shadow .3s var(--ease-out-expo);
}
.compare-lose:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}

.compare-badge{
  display:inline-block;margin-bottom:.8rem;
  padding:.25rem .9rem;font-size:var(--text-2xs);
  font-weight:700;letter-spacing:.06em;
  white-space:nowrap;border-radius:4px;
}
.badge-win{background:var(--ink);color:var(--white)}
.badge-lose{background:rgba(var(--ink-rgb),.1);color:rgba(var(--ink-rgb),.5)}

/* ═══════════ PIPELINE / STEP CARDS ═══════════════ */
.pipeline{display:flex;gap:1rem;flex-wrap:wrap}
.step{
  flex:1;min-width:200px;text-align:center;
  padding:1.5rem 1.2rem;
  background:rgba(var(--ink-rgb),.03);
  border-radius:var(--radius-md);
  transition:transform .35s var(--ease-out-expo),
             box-shadow .35s var(--ease-out-expo);
  position:relative;overflow:hidden;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step::after{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease-out-expo);
}
.step:hover::after{transform:scaleX(1)}
.step-nb{
  width:3rem;height:3rem;border-radius:50%;
  background:var(--accent);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto .8rem;
  font-family:var(--serif);font-size:1.25rem;font-weight:700;
}
.step-title{font-weight:600;font-size:.95rem;margin-bottom:.35rem}
.step-desc{
  font-size:var(--text-sm);color:rgba(var(--ink-rgb),.5);
  line-height:1.5;
}

.section-dark .step{background:rgba(255,255,255,.04)}
.section-dark .step:hover{box-shadow:0 8px 24px rgba(0,0,0,.25)}
.section-dark .step-desc{color:rgba(255,255,255,.45)}

/* ═══════════ IMAGE FRAMES ════════════════════════ */
.frame{border-radius:var(--radius-md);overflow:hidden;position:relative}
.frame-img{
  width:100%;height:100%;object-fit:cover;display:block;
  background:var(--paper-tint);transition:transform .5s var(--ease-out-expo);
}
.frame:hover .frame-img{transform:scale(1.04)}
.frame.contain .frame-img{object-fit:contain;background:transparent}

.img-ph{
  background:linear-gradient(145deg,var(--paper-tint) 0%,#dce8e0 40%,#d0e0d6 100%);
  display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:.5rem;color:var(--accent);
  font-size:var(--text-xs);font-weight:500;min-height:120px;
  border-radius:var(--radius-md);position:relative;
}
.img-ph.dark-bg{
  background:linear-gradient(145deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.03) 40%,rgba(255,255,255,.08) 100%);
  color:var(--accent-glow);
}
.img-ph svg{opacity:.3;width:36px;height:36px}
.img-cap{
  font-family:var(--mono);font-size:.65rem;
  color:rgba(var(--ink-rgb),.35);margin-top:.5rem;text-align:center;
}
.section-dark .img-cap{color:rgba(255,255,255,.3)}

/* Aspect Ratios */
.ar-16-9{aspect-ratio:16/9}
.ar-4-3{aspect-ratio:4/3}
.ar-1-1{aspect-ratio:1/1}
.ar-2-1{aspect-ratio:2/1}

/* ═══════════ IMAGE GALLERIES ═════════════════════ */
.gal2{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.gal3{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}
.gal4{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem}
.gal-vert{display:grid;grid-template-rows:1fr 1fr;gap:.6rem}

@media(max-width:640px){
  .gal2,.gal3,.gal4{grid-template-columns:1fr}
}

/* ═══════════ CALLOUT BOX ═════════════════════════ */
.callout{
  background:rgba(var(--ink-rgb),.03);
  border-left:4px solid var(--accent);
  padding:1.2rem 1.5rem;border-radius:var(--radius-sm);
  margin-top:1.5rem;
}
.callout .body-text{font-weight:500;color:rgba(var(--ink-rgb),.65)}
.section-dark .callout{
  background:rgba(255,255,255,.06);
  border-left-color:var(--accent-glow);
}
.section-dark .callout .body-text{color:rgba(255,255,255,.55)}

/* ═══════════ TAG / BADGE ═════════════════════════ */
.tag{
  display:inline-block;padding:.3rem .9rem;
  background:var(--paper-tint);color:var(--accent);
  font-family:var(--mono);font-size:var(--text-2xs);
  font-weight:500;letter-spacing:.05em;
  margin-bottom:.8rem;border-radius:4px;
}
.section-dark .tag{background:rgba(255,255,255,.08);color:var(--accent-glow)}

/* ═══════════ BUTTONS ═════════════════════════════ */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.75rem 1.75rem;font-size:var(--text-sm);font-weight:600;
  border-radius:var(--radius-sm);cursor:pointer;
  text-decoration:none;border:none;
  transition:all var(--duration-normal) var(--ease-out-expo);
  font-family:var(--sans);letter-spacing:.02em;
}
.btn-primary{
  background:var(--accent);color:var(--white);
  box-shadow:0 2px 8px rgba(var(--accent-rgb),.25);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(var(--accent-rgb),.4);
  background:var(--ink-tint);
}
.btn-ghost{
  background:transparent;color:var(--accent);
  border:1.5px solid var(--accent);
}
.btn-ghost:hover{background:var(--accent);color:var(--white)}
.btn-outline-light{
  background:transparent;color:var(--white);
  border:1.5px solid rgba(255,255,255,.3);
}
.btn-outline-light:hover{
  border-color:var(--accent-glow);color:var(--accent-glow);
  background:rgba(var(--accent-glow-rgb),.1);
}
.btn-lg{padding:1rem 2.5rem;font-size:1.05rem;border-radius:var(--radius-md)}

/* ═══════════ TIMELINE ════════════════════════════ */
.timeline{position:relative;padding-left:2.5rem}
.timeline::before{
  content:'';position:absolute;left:8px;top:0;bottom:0;
  width:2px;background:var(--border-medium);
}
.timeline-item{position:relative;margin-bottom:3rem}
.timeline-item:last-child{margin-bottom:0}
.timeline-dot{
  position:absolute;left:-2.5rem;top:0;
  width:18px;height:18px;border-radius:50%;
  background:var(--accent);border:3px solid var(--paper);
  box-shadow:0 0 0 3px var(--accent),0 4px 12px rgba(var(--accent-rgb),.3);
}
.section-dark .timeline-dot{border-color:var(--ink-tint)}
.timeline-year{
  font-family:var(--mono);font-size:var(--text-xs);
  color:var(--accent);font-weight:600;letter-spacing:.06em;margin-bottom:.3rem;
}
.timeline-title{font-weight:700;font-size:1.1rem;margin-bottom:.4rem}
.timeline-desc{font-size:var(--text-sm);color:rgba(var(--ink-rgb),.55);line-height:1.55}

/* ═══════════ DATA TABLE ══════════════════════════ */
.data-table{width:100%;border-collapse:collapse;font-size:var(--text-sm)}
.data-table th{
  text-align:left;padding:.8rem 1rem;
  font-family:var(--mono);font-size:var(--text-2xs);
  font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(var(--ink-rgb),.45);border-bottom:2px solid var(--border-medium);
}
.data-table td{
  padding:.8rem 1rem;border-bottom:1px solid var(--border-subtle);
}
.data-table tr:hover td{background:rgba(var(--accent-rgb),.04)}
.data-table .highlight-cell{
  color:var(--accent);font-weight:700;
  background:rgba(var(--accent-rgb),.06);
}
.section-dark .data-table th{color:rgba(255,255,255,.35);border-bottom-color:rgba(255,255,255,.08)}
.section-dark .data-table td{border-bottom-color:rgba(255,255,255,.04)}
.section-dark .data-table tr:hover td{background:rgba(255,255,255,.03)}

/* ═══════════ CONTACT FORM ════════════════════════ */
.form-group{margin-bottom:1.25rem}
.form-label{
  display:block;font-size:var(--text-xs);font-weight:600;
  margin-bottom:.4rem;color:rgba(var(--ink-rgb),.6);
  letter-spacing:.03em;
}
.form-input,.form-textarea{
  width:100%;padding:.75rem 1rem;
  font-size:var(--text-body);font-family:var(--sans);
  border:1.5px solid var(--border-medium);
  border-radius:var(--radius-sm);background:var(--white);
  color:var(--ink);outline:none;
  transition:border-color var(--duration-fast),box-shadow var(--duration-fast);
}
.form-input:focus,.form-textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(var(--accent-rgb),.15);
}
.form-textarea{min-height:140px;resize:vertical}
.section-dark .form-input,.section-dark .form-textarea{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.1);color:var(--white);
}
.section-dark .form-input:focus,.section-dark .form-textarea:focus{
  border-color:var(--accent-glow);
  box-shadow:0 0 0 3px rgba(var(--accent-glow-rgb),.2);
}

/* ═══════════ FOOTER ══════════════════════════════ */
.footer{
  background:var(--ink);color:rgba(255,255,255,.45);
  padding:var(--section-py) var(--section-px) 2rem;
  font-size:var(--text-sm);
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;
  gap:3rem;max-width:var(--content-max);margin:0 auto 3rem;
}
.footer-brand-name{
  font-family:var(--serif);font-size:1.3rem;font-weight:700;color:var(--white);
  margin-bottom:.75rem;
}
.footer-brand-desc{line-height:1.65;margin-bottom:1rem}
.footer-heading{
  font-size:var(--text-xs);font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:1rem;
}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:.5rem}
.footer-links a{
  text-decoration:none;color:rgba(255,255,255,.4);
  transition:color var(--duration-fast);
}
.footer-links a:hover{color:var(--accent-glow)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:1.5rem;text-align:center;
  max-width:var(--content-max);margin:0 auto;
  font-size:var(--text-2xs);
}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* ═══════════ SCROLL ANIMATIONS ═══════════════════ */
[data-anim]{
  opacity:0;transform:translateY(30px);
  transition:opacity .7s var(--ease-out-expo),
             transform .7s var(--ease-out-expo);
}
[data-anim].visible{opacity:1;transform:translateY(0)}
[data-anim].d1{transition-delay:.05s}
[data-anim].d2{transition-delay:.1s}
[data-anim].d3{transition-delay:.18s}
[data-anim].d4{transition-delay:.25s}
[data-anim].d5{transition-delay:.32s}
[data-anim].d6{transition-delay:.4s}
[data-anim].d7{transition-delay:.48s}

/* Slide-in variants */
[data-anim="left"]{transform:translateX(-40px)}
[data-anim="left"].visible{transform:translateX(0)}
[data-anim="right"]{transform:translateX(40px)}
[data-anim="right"].visible{transform:translateX(0)}
[data-anim="scale"]{transform:scale(.9)}
[data-anim="scale"].visible{transform:scale(1)}

/* ═══════════ UTILITY CLASSES ═════════════════════ */
.relative{position:relative}
.overflow-hidden{overflow:hidden}
.gap-sm{gap:.75rem}
.gap-md{gap:1.5rem}
.gap-lg{gap:3rem}
.mt-sm{margin-top:1rem}
.mt-md{margin-top:2rem}
.mt-lg{margin-top:4rem}
.mb-sm{margin-bottom:1rem}
.mb-md{margin-bottom:2rem}
.mb-lg{margin-bottom:4rem}
.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.flex-wrap{flex-wrap:wrap}
.wrap-balance{text-wrap:balance}

/* ═══════════ RESPONSIVE ══════════════════════════ */
@media(max-width:1440px){
  :root{--section-px:clamp(1.5rem,4vw,4rem)}
}
@media(max-width:1024px){
  :root{--nav-height:64px}
  .hide-tablet{display:none !important}
}
@media(max-width:768px){
  :root{--nav-height:60px}
  .hide-mobile{display:none !important}
  .section{--section-py:clamp(3rem,6vh,6rem)}
}
@media(max-width:480px){
  .h-hero{font-size:clamp(2rem,9vw,3.5rem)}
}

/* ═══════════ GSAP REVEAL CLASS ══════════════════ */
.reveal{opacity:0;transform:translateY(35px)}
.reveal.visible{opacity:1;transform:translateY(0);transition:opacity .8s var(--ease-out-expo),transform .8s var(--ease-out-expo)}

/* ═══════════ FLOATING ANIMATION ═════════════════ */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.animate-float{animation:float 5s ease-in-out infinite}
@keyframes floatSlow{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.animate-float-slow{animation:floatSlow 8s ease-in-out infinite}

/* ═══════════ PULSE GLOW ═════════════════════════ */
@keyframes pulseGlow{0%,100%{box-shadow:0 0 20px rgba(46,168,90,.2)}50%{box-shadow:0 0 40px rgba(93,219,138,.4)}}
.animate-pulse-glow{animation:pulseGlow 3s ease-in-out infinite}

/* ═══════════ FADE IN UP ═════════════════════════ */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-fade-in-up{animation:fadeInUp .8s var(--ease-out-expo) forwards}

/* ═══════════ STAGGER CHILDREN ═══════════════════ */
.stagger-children > *{opacity:0;transform:translateY(30px)}
.stagger-children.visible > *:nth-child(1){animation:fadeInUp .7s .05s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(2){animation:fadeInUp .7s .15s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(3){animation:fadeInUp .7s .25s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(4){animation:fadeInUp .7s .35s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(5){animation:fadeInUp .7s .45s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(6){animation:fadeInUp .7s .55s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(7){animation:fadeInUp .7s .65s var(--ease-out-expo) forwards}
.stagger-children.visible > *:nth-child(8){animation:fadeInUp .7s .75s var(--ease-out-expo) forwards}

/* ═══════════ SAFE REVEAL (visible by default, JS hides then animates) ══ */
.reveal { opacity: 1 !important; transform: none !important; }
.js-ready .reveal { opacity: 0; transform: translateY(35px); }