@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.css');
@import url('https://cdn.jsdelivr.net/gh/fonts-archive/GmarketSans/subsets/GmarketSans-dynamic-subset.css');
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  --ink:#0B1D3E;
  --ink-2:#122952;
  --paper:#FFFFFF;
  --paper-deep:#F2F5F9;
  --white:#FFFFFF;
  --red:#0062FF;
  --red-deep:#0047BF;
  --red-soft:#E6EFFF;
  --slate:#57677A;
  --slate-2:#8592A0;
  --line:rgba(18,33,61,0.12);
  --line-dark:rgba(255,255,255,0.14);
  --radius:20px;
  --shadow-sm:0 4px 20px rgba(20,22,26,0.05);
  --shadow-md:0 12px 40px rgba(0,98,255,0.08);
  --shadow-glow:0 8px 24px rgba(0,98,255,0.22);
  --serif:'Gmarket Sans', 'Pretendard Variable', sans-serif;
  --sans:'Pretendard Variable', Pretendard, sans-serif;
  --mono:'IBM Plex Mono', monospace;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  background-image:
    radial-gradient(560px circle at 8% -6%, rgba(0,98,255,0.07), transparent 60%),
    radial-gradient(600px circle at 96% 8%, rgba(130,90,255,0.06), transparent 60%);
  background-repeat:no-repeat;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:1120px;margin:0 auto;padding:0 32px;}
section{position:relative;}
.eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--red-deep);
  background:var(--red-soft);
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 16px 7px 12px;
  border-radius:999px;
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red);display:inline-block;}
.eyebrow-dark{background:rgba(255,255,255,0.08);color:#9DC0FF;}
.eyebrow-dark::before{background:#9DC0FF;}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:0;}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- HEADER ---------- */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(238,241,238,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.logo{
  font-family:var(--serif);font-weight:700;font-size:21px;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.logo-img{height:50px;width:auto;display:block;}
.logo span{
  font-family:var(--mono);font-size:10px;font-weight:600;color:var(--slate-2);
  letter-spacing:0.1em;
}
.nav-links{display:flex;gap:34px;align-items:center;}
.nav-links button{
  font-size:14.5px;font-weight:500;color:var(--slate);
  position:relative;padding:4px 0;
  background:none;border:none;cursor:pointer;font-family:var(--sans);
  transition:color .2s ease;
}
.nav-links button:hover{color:var(--ink);}
.nav-links button.active{color:var(--ink);font-weight:700;}
.nav-links button.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--red);border-radius:2px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;
  font-size:14.5px;font-weight:700;font-family:var(--sans);
  cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease, background .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(0.97);}
.btn-red{background:var(--red);color:var(--white);box-shadow:var(--shadow-glow);}
.btn-red:hover{background:var(--red-deep);box-shadow:0 10px 28px rgba(0,98,255,0.32);}
.btn-outline-dark{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-outline-dark:hover{border-color:var(--ink);}
.btn-outline-light{border-color:var(--line-dark);color:var(--white);background:transparent;}
.btn-outline-light:hover{border-color:rgba(255,255,255,0.5);}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:8px;}
.menu-toggle span{width:22px;height:2px;background:var(--ink);display:block;}

/* ---------- HERO ---------- */
.hero{
  background:var(--ink);
  color:var(--white);
  padding:88px 0 64px;
  overflow:hidden;
  position:relative;
}
.hero::before{
  content:"";position:absolute;top:-180px;right:-120px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle, rgba(0,98,255,0.35), transparent 70%);
  filter:blur(20px);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-220px;left:-140px;width:460px;height:460px;
  border-radius:50%;background:radial-gradient(circle, rgba(130,90,255,0.22), transparent 70%);
  filter:blur(20px);pointer-events:none;
}
.hero .wrap{position:relative;z-index:1;}
.hero-grid{
  display:grid;grid-template-columns:1.05fr 0.95fr;gap:56px;align-items:center;
}
.hero-eyebrow{
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:0.16em;
  color:#9DC0FF;text-transform:uppercase;margin-bottom:22px;
}
.hero h1{
  font-size:50px;line-height:1.28;color:var(--white);margin-bottom:22px;
}
.hero h1 em{
  font-style:normal;color:var(--white);position:relative;
  background-image:linear-gradient(var(--red),var(--red));
  background-repeat:no-repeat;
  background-size:0% 3px;
  background-position:0 92%;
  animation:underline-draw 1.4s ease-out 0.6s forwards;
}
@keyframes underline-draw{to{background-size:100% 3px;}}
.hero p.sub{
  font-size:17px;color:#C7D0DC;max-width:460px;margin-bottom:34px;
}
.hero-ctas{display:flex;gap:14px;margin-bottom:46px;flex-wrap:wrap;}
.hero-stats{
  display:flex;gap:36px;padding-top:26px;border-top:1px solid var(--line-dark);
  flex-wrap:wrap;
}
.hero-stat b{
  font-family:var(--mono);font-size:24px;font-weight:600;color:var(--white);display:block;
}
.hero-stat span{font-size:12.5px;color:var(--slate-2);}

/* hero visual : document with pen marks */
.hero-visual{position:relative;display:flex;justify-content:center;}
.doc-card{
  background:var(--white);border-radius:20px;width:340px;padding:28px 26px;
  box-shadow:0 24px 60px rgba(0,98,255,0.18), 0 8px 24px rgba(0,0,0,0.25);
  color:var(--ink);position:relative;
}
.doc-card .doc-tag{
  font-family:var(--mono);font-size:10.5px;color:var(--slate-2);letter-spacing:0.08em;
  margin-bottom:14px;text-transform:uppercase;
}
.doc-line{height:9px;border-radius:4px;background:var(--paper-deep);margin-bottom:12px;position:relative;overflow:visible;}
.doc-line.w1{width:96%;}
.doc-line.w2{width:82%;}
.doc-line.w3{width:90%;}
.doc-line.w4{width:60%;}
.pen-underline{
  position:absolute;left:0;bottom:-4px;height:3px;background:var(--red);
  width:0%;border-radius:2px;
  animation:pen-draw 0.9s ease-out forwards;
}
.doc-line:nth-of-type(1) .pen-underline{animation-delay:1.1s;}
.doc-line:nth-of-type(2) .pen-underline{animation-delay:1.5s;width:0%;}
.pen-circle{
  position:absolute;border:2.5px solid var(--red);border-radius:50%;
  width:64px;height:26px;left:58%;top:-8px;
  opacity:0;transform:scale(0.6) rotate(-4deg);
  animation:pen-circle-in 0.5s ease-out 2.0s forwards;
}
@keyframes pen-draw{from{width:0%;}to{width:100%;}}
@keyframes pen-circle-in{to{opacity:1;transform:scale(1) rotate(-4deg);}}
.doc-arrow{
  display:flex;align-items:center;justify-content:center;margin:18px 0;color:var(--slate-2);font-size:20px;
}
.question-card{
  background:var(--ink);color:var(--white);border-radius:20px;padding:22px 24px;
  box-shadow:0 20px 40px rgba(0,0,0,0.3);
  border:1px solid rgba(255,255,255,0.08);
}
.question-card .qtag{
  font-family:var(--mono);font-size:10.5px;color:#9DC0FF;letter-spacing:0.08em;margin-bottom:10px;text-transform:uppercase;
}
.question-card p{font-size:15px;font-weight:500;line-height:1.55;}

/* ---------- WHY SECTION ---------- */
.why{padding:96px 0;background:var(--paper);}
.why-head{max-width:640px;margin-bottom:56px;}
.why-head h2{font-size:34px;color:var(--ink);line-height:1.4;}
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
.chart-box{
  background:var(--white);border-radius:var(--radius);border:1px solid var(--line);
  padding:28px 30px;box-shadow:var(--shadow-sm);
}
.chart-title{font-size:13.5px;color:var(--slate);margin-bottom:22px;font-weight:500;}
.chart-title b{color:var(--ink);font-weight:700;}
.bars{display:flex;align-items:flex-end;gap:14px;height:150px;margin-bottom:10px;}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;}
.bar{
  width:100%;background:var(--paper-deep);border-radius:5px 5px 0 0;position:relative;
  transition:background .2s ease;
}
.bar-col:last-child .bar{background:var(--red);}
.bar-val{font-family:var(--mono);font-size:11px;color:var(--slate);margin-bottom:6px;font-weight:600;}
.bar-col:last-child .bar-val{color:var(--red-deep);}
.bar-year{font-family:var(--mono);font-size:11px;color:var(--slate-2);margin-top:8px;}
.chart-note{font-size:12.5px;color:var(--slate);margin-top:14px;border-top:1px solid var(--line);padding-top:14px;}

.problem-list{display:flex;flex-direction:column;gap:0;}
.problem-item{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
}
.problem-item:first-child{padding-top:0;}
.problem-mark{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:2px solid var(--red);
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.problem-mark::after{content:"";width:8px;height:8px;background:var(--red);border-radius:50%;}
.problem-item h3{font-size:15.5px;font-family:var(--sans);font-weight:700;margin-bottom:5px;}
.problem-item p{font-size:13.8px;color:var(--slate);}

/* ---------- FEATURES ---------- */
.features{padding:96px 0;background:var(--white);}
.features-head{max-width:640px;margin-bottom:20px;}
.features-head h2{font-size:34px;line-height:1.4;}
.features-head p{font-size:15.5px;color:var(--slate);margin-top:16px;max-width:520px;}
.feature-block{
  display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:center;
  padding:64px 0;border-top:1px solid var(--line);
}
.feature-block:nth-child(even){grid-template-columns:1.15fr 0.85fr;}
.feature-block:nth-child(even) .feature-copy{order:2;}
.feature-block:nth-child(even) .feature-diagram{order:1;}
.feature-tag{
  font-family:var(--mono);font-size:12px;color:var(--red);font-weight:600;margin-bottom:12px;letter-spacing:0.05em;
}
.feature-copy h3{font-size:25px;line-height:1.4;margin-bottom:14px;}
.feature-copy p{font-size:14.5px;color:var(--slate);margin-bottom:20px;}
.feature-points{display:flex;flex-direction:column;gap:10px;}
.feature-point{display:flex;gap:10px;align-items:flex-start;font-size:13.8px;color:var(--ink);}
.feature-point::before{content:"—";color:var(--red);font-weight:700;flex-shrink:0;}

.feature-diagram{
  background:var(--white);border-radius:var(--radius);padding:32px 28px;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.flow-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.flow-node{
  background:var(--white);border:1px solid var(--line);border-radius:16px;
  padding:16px 16px;flex:1;min-width:120px;text-align:center;
  box-shadow:var(--shadow-sm);transition:transform .2s ease, box-shadow .2s ease;
}
.flow-node:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.flow-node .fn-ico{font-size:20px;margin-bottom:8px;}
.flow-node .fn-label{font-size:12.5px;font-weight:700;color:var(--ink);margin-bottom:3px;}
.flow-node .fn-sub{font-size:11px;color:var(--slate);}
.flow-node.final{background:var(--ink);border-color:var(--ink);}
.flow-node.final .fn-label{color:var(--white);}
.flow-node.final .fn-sub{color:var(--slate-2);}
.flow-arrow{color:var(--slate-2);font-size:16px;flex-shrink:0;}

.tri-analysis{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap;}
.tri-item{
  flex:1;min-width:110px;background:var(--white);border:1px solid var(--line);border-radius:16px;
  padding:16px;text-align:center;box-shadow:var(--shadow-sm);
}
.tri-item .ti-ico{font-size:20px;margin-bottom:8px;}
.tri-item .ti-label{font-size:12.5px;font-weight:700;margin-bottom:3px;}
.tri-item .ti-sub{font-size:11px;color:var(--slate);}
.tri-plus{text-align:center;color:var(--slate-2);font-size:15px;margin:2px 0;}
.report-box{
  background:var(--white);border:1px solid var(--line);border-radius:16px;padding:18px 20px;
  display:flex;align-items:center;gap:14px;box-shadow:var(--shadow-sm);
}
.report-box .rb-ico{font-size:22px;}
.report-box .rb-label{font-size:13.5px;font-weight:700;color:var(--ink);}
.report-box .rb-sub{font-size:11.5px;color:var(--slate);}

.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.admin-item{
  background:var(--white);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow-sm);
}
.admin-item .ai-ico{font-size:18px;margin-bottom:8px;}
.admin-item .ai-label{font-size:12.5px;font-weight:700;margin-bottom:3px;}
.admin-item .ai-sub{font-size:11px;color:var(--slate);}

/* ---------- FLOW (이용흐름) ---------- */
.usage{padding:96px 0;background:var(--ink);color:var(--white);}
.usage-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;flex-wrap:wrap;gap:20px;}
.usage-head h2{font-size:32px;color:var(--white);}
.tabs{display:flex;gap:6px;background:rgba(255,255,255,0.06);padding:5px;border-radius:999px;}
.tab-btn{
  padding:9px 20px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--slate-2);
  cursor:pointer;border:none;background:none;transition:all .2s ease;
}
.tab-btn.active{background:var(--white);color:var(--ink);}
.flow-steps{display:none;grid-template-columns:repeat(4,1fr);gap:16px;}
.flow-steps.active{display:grid;}
.step-card{
  background:rgba(255,255,255,0.06);border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:26px 22px;position:relative;backdrop-filter:blur(6px);
  transition:transform .2s ease, background .2s ease;
}
.step-card:hover{transform:translateY(-3px);background:rgba(255,255,255,0.09);}
.step-num{font-family:var(--mono);font-size:12px;color:var(--red);font-weight:600;margin-bottom:14px;}
.step-card h3{font-family:var(--sans);font-size:15px;font-weight:700;color:var(--white);margin-bottom:8px;}
.step-card p{font-size:12.8px;color:var(--slate-2);}
.usage-notes{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;padding-top:40px;border-top:1px solid var(--line-dark);}
.note-item{display:flex;gap:12px;align-items:flex-start;}
.note-item .n-ico{font-size:18px;flex-shrink:0;}
.note-item h4{font-family:var(--sans);font-size:13.5px;font-weight:700;color:var(--white);margin-bottom:4px;}
.note-item p{font-size:12px;color:var(--slate-2);}

/* ---------- BENEFITS / DIFFERENTIATION ---------- */
.benefits{padding:96px 0;background:var(--paper);}
.benefits-head{max-width:600px;margin-bottom:52px;}
.benefits-head h2{font-size:34px;line-height:1.4;}
.benefit-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-bottom:80px;}
.benefit-panel{
  background:var(--white);border:1px solid var(--line);border-radius:24px;
  padding:36px 32px 12px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.benefit-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--red);}
.benefit-panel-head{
  display:flex;align-items:center;gap:16px;margin-bottom:26px;padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.bp-icon{
  font-size:28px;width:56px;height:56px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--red-soft);border-radius:16px;
}
.bp-title{font-family:var(--serif);font-weight:700;font-size:28px;color:var(--ink);}
.benefit-row{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);align-items:flex-start;}
.benefit-row:last-child{border-bottom:none;}
.br-num{
  font-family:var(--mono);font-size:12.5px;font-weight:600;color:var(--red-deep);
  background:var(--red-soft);width:30px;height:30px;border-radius:50%;flex-shrink:0;margin-top:1px;
  display:flex;align-items:center;justify-content:center;
}
.benefit-row h4{font-size:15.5px;font-family:var(--sans);font-weight:700;margin-bottom:5px;color:var(--ink);}
.benefit-row p{font-size:13.5px;color:var(--slate);}

.diff-wrap{background:var(--white);border-radius:24px;border:1px solid var(--line);padding:8px;box-shadow:var(--shadow-sm);}
.diff-item{
  display:grid;grid-template-columns:220px 1fr;gap:32px;padding:36px 32px;border-bottom:1px solid var(--line);
}
.diff-item:last-child{border-bottom:none;}
.diff-label{font-family:var(--mono);font-size:12px;color:var(--red);font-weight:600;margin-bottom:8px;}
.diff-item h3{font-size:19px;line-height:1.4;}
.diff-item p{font-size:14px;color:var(--slate);}

/* ---------- CONTACT / CTA ---------- */
.contact{padding:110px 0;background:var(--ink);color:var(--white);text-align:center;position:relative;overflow:hidden;}
.contact::before{
  content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);width:640px;height:400px;
  border-radius:50%;background:radial-gradient(circle, rgba(0,98,255,0.28), transparent 70%);
  filter:blur(20px);pointer-events:none;
}
.contact .wrap{position:relative;z-index:1;}
.contact-form{
  max-width:560px;margin:0 auto 8px;text-align:left;
  background:rgba(255,255,255,0.05);border:1px solid var(--line-dark);
  border-radius:24px;padding:32px;backdrop-filter:blur(10px);
}
.cf-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.cf-field{display:flex;flex-direction:column;gap:8px;}
.cf-field label{font-size:12.5px;font-weight:600;color:var(--slate-2);}
.cf-field input{
  height:46px;border-radius:9px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,0.05);color:var(--white);
  padding:0 14px;font-size:14px;font-family:var(--sans);
  outline:none;transition:border-color .18s ease, background .18s ease;
}
.cf-field input::placeholder{color:var(--slate-2);}
.cf-field input:focus{border-color:var(--red);background:rgba(255,255,255,0.08);}
.cf-field textarea{
  border-radius:9px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,0.05);color:var(--white);
  padding:12px 14px;font-size:14px;font-family:var(--sans);
  outline:none;resize:vertical;min-height:96px;
  transition:border-color .18s ease, background .18s ease;
}
.cf-field textarea::placeholder{color:var(--slate-2);}
.cf-field textarea:focus{border-color:var(--red);background:rgba(255,255,255,0.08);}
.cf-submit{width:100%;height:50px;border-radius:9px;font-size:15px;margin-top:6px;}
.contact h2{font-size:38px;color:var(--white);line-height:1.4;margin-bottom:18px;}
.contact p{font-size:16px;color:var(--slate-2);max-width:520px;margin:0 auto 40px;}
.contact-ctas{display:flex;justify-content:center;gap:14px;margin-bottom:56px;flex-wrap:wrap;}
.contact-info{
  display:flex;justify-content:center;gap:0;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);padding-top:40px;max-width:640px;margin:0 auto;
}
.ci-item{flex:1;min-width:160px;padding:0 24px;}
.ci-item .ci-label{font-size:12px;color:var(--slate-2);margin-bottom:8px;}
.ci-item .ci-val{font-family:var(--mono);font-size:16px;font-weight:600;color:var(--white);}

/* ---------- FAQ ---------- */
.faq{padding:96px 0;background:var(--paper);}
.faq-head{max-width:600px;margin-bottom:44px;}
.faq-head h2{font-size:34px;}
.faq-list{max-width:780px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 4px;cursor:pointer;
}
.faq-q h3{font-family:var(--sans);font-size:15.5px;font-weight:700;}
.faq-q .faq-plus{font-size:22px;color:var(--red);font-weight:400;flex-shrink:0;transition:transform .25s ease;line-height:1;}
.faq-item.open .faq-plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-item.open .faq-a{max-height:260px;}
.faq-a p{font-size:14px;color:var(--slate);padding:0 4px 22px;max-width:680px;}

/* ---------- FOOTER ---------- */
footer{background:var(--ink);color:var(--slate-2);padding:56px 0 32px;border-top:1px solid var(--line-dark);}
.footer-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:40px;flex-wrap:wrap;gap:24px;}
.footer-logo{font-family:var(--serif);font-weight:700;font-size:21px;color:var(--white);margin-bottom:10px;}
.footer-tag{font-size:13px;max-width:280px;}
.footer-contact{display:flex;gap:40px;flex-wrap:wrap;}
.footer-contact div{font-size:13px;}
.footer-contact b{display:block;color:var(--white);font-weight:600;margin-bottom:4px;font-size:12px;}
.footer-bottom{border-top:1px solid var(--line-dark);padding-top:24px;font-size:12px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ---------- RESPONSIVE ---------- */
@media(max-width:860px){
  .wrap{padding:0 20px;}
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .hero{padding:56px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .hero-stats{gap:24px;}
  .why-grid{grid-template-columns:1fr;gap:40px;}
  .feature-block, .feature-block:nth-child(even){grid-template-columns:1fr;gap:28px;padding:44px 0;}
  .feature-block:nth-child(even) .feature-copy,
  .feature-block:nth-child(even) .feature-diagram{order:initial;}
  .usage-head{flex-direction:column;align-items:flex-start;}
  .flow-steps{grid-template-columns:1fr 1fr;}
  .usage-notes{grid-template-columns:1fr 1fr;}
  .benefit-cols{grid-template-columns:1fr;gap:40px;}
  .diff-item{grid-template-columns:1fr;gap:12px;padding:28px 22px;}
  .contact-info{flex-direction:column;gap:20px;}
  .cf-row{grid-template-columns:1fr;}
  .contact-form{padding:22px;}
  .ci-item{border-bottom:1px solid var(--line-dark);padding-bottom:20px;}
  .ci-item:last-child{border-bottom:none;}
  .footer-top{flex-direction:column;}
  h1{font-size:30px;}
  .why-head h2, .features-head h2, .benefits-head h2, .faq-head h2{font-size:26px;}
  .contact h2{font-size:28px;}
}
@media(max-width:520px){
  .admin-grid{grid-template-columns:1fr;}
  .tri-analysis{flex-direction:column;}
  .flow-row{flex-direction:column;}
  .flow-arrow{transform:rotate(90deg);}
}