:root {
  --k777-ink: #073d35;
  --k777-text: #24443f;
  --k777-muted: #667c78;
  --k777-green: #008e73;
  --k777-green-2: #01b88d;
  --k777-green-dark: #00473f;
  --k777-deep: #012f2e;
  --k777-gold: #f5c945;
  --k777-gold-2: #ffdf68;
  --k777-line: #dce9e4;
  --k777-bg: #ffffff;
  --k777-soft: #f6fbf9;
  --k777-ruby: #b92d24;
  --k777-shadow: 0 18px 42px rgba(0, 72, 58, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.k777-page {
  margin: 0;
  color: var(--k777-text);
  background: var(--k777-bg);
  font-family: Arial, "Noto Sans Bengali", "Noto Sans", Helvetica, sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
.k777-site { min-height: 100vh; background: linear-gradient(180deg, #fff 0%, #f8fdfb 54%, #fff 100%); }
.k777-shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.k777-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 10px 30px rgba(0, 58, 50, .08);
}
.k777-topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 78px; }
.k777-brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.k777-logo {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  color: var(--k777-green);
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 900;
  line-height: .9;
  letter-spacing: 0;
  white-space: nowrap;
}
.k777-logo span { color: #3a3f42; font-size: .86em; font-style: italic; }
.k777-logo::after {
  content: "";
  position: absolute;
  top: -10px;
  right: -15px;
  width: 14px;
  height: 14px;
  background: var(--k777-gold);
  clip-path: polygon(50% 0, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}
.k777-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.k777-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}
.k777-btn:hover, .k777-btn:focus-visible { transform: translateY(-1px); outline: none; }
.k777-btn-primary { color: #fff; background: linear-gradient(135deg, var(--k777-green-2), var(--k777-green)); box-shadow: 0 12px 24px rgba(0, 149, 113, .24); }
.k777-btn-light { color: var(--k777-green-dark); background: #fff; border-color: #b9d8d1; }
.k777-btn svg { width: 19px; height: 19px; flex: 0 0 auto; }
.k777-nav-wrap {
  background: linear-gradient(90deg, #004b43, #006352 52%, #00423b);
  border-top: 1px solid #e7f2ee;
  border-bottom: 2px solid rgba(245, 201, 69, .76);
}
.k777-nav { display: flex; align-items: center; min-height: 54px; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.k777-nav::-webkit-scrollbar { display: none; }
.k777-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 18px;
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
}
.k777-nav a:hover, .k777-nav a:focus-visible, .k777-nav a.is-active { color: var(--k777-gold-2); border-bottom-color: var(--k777-gold); outline: none; }
.k777-home { width: 58px; padding: 0; color: #20d297; }
.k777-home svg { width: 27px; height: 27px; }
.k777-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 77% 19%, rgba(255, 224, 95, .32), transparent 18%),
    radial-gradient(circle at 52% 64%, rgba(0, 229, 176, .22), transparent 28%),
    linear-gradient(128deg, #00423d 0%, #00332f 48%, #006d55 100%);
}
.k777-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, .08) 0 1px, transparent 1px 120px),
    radial-gradient(circle at 36% 31%, rgba(255, 217, 80, .2), transparent 2px),
    radial-gradient(circle at 86% 30%, rgba(255, 217, 80, .22), transparent 2px),
    radial-gradient(circle at 54% 74%, rgba(255, 217, 80, .18), transparent 2px);
  opacity: .84;
  pointer-events: none;
}
.k777-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 560px);
  gap: 30px;
  align-items: center;
  min-height: 560px;
  padding: 54px 0 58px;
}
.k777-hero h1 { margin: 0 0 18px; color: #fff; line-height: 1.03; font-weight: 900; letter-spacing: 0; text-shadow: 0 12px 28px rgba(0, 0, 0, .24); }
.k777-hero h1 span { display: block; }
.k777-brand-line { color: #38d98f; font-size: clamp(44px, 6vw, 76px); font-style: italic; line-height: .96; overflow-wrap: anywhere; }
.k777-brand-country { overflow-wrap: anywhere; word-break: break-word; }
.k777-subline { color: #fff; font-size: clamp(27px, 3vw, 37px); line-height: 1.08; max-width: 620px; overflow-wrap: anywhere; }
.k777-hero h1 strong {
  display: block;
  color: transparent;
  background: linear-gradient(180deg, #fff3a1 0%, #ffd044 42%, #f7a400 100%);
  -webkit-background-clip: text;
  background-clip: text;
  font-size: clamp(76px, 9vw, 122px);
  line-height: .92;
  -webkit-text-stroke: 1px rgba(74, 42, 0, .2);
}
.k777-hero-copy { min-width: 0; }
.k777-hero-copy p { max-width: 560px; margin: 0 0 28px; color: rgba(255,255,255,.9); font-size: 20px; font-weight: 700; line-height: 1.52; overflow-wrap: anywhere; }
.k777-hero-visual { position: relative; min-width: 0; border-radius: 14px; }
.k777-hero-visual img { width: 100%; border-radius: 12px; filter: drop-shadow(0 24px 36px rgba(0, 0, 0, .28)); }
.k777-section { padding: 54px 0; }
.k777-intro { background: #fff; }
.k777-section-title { margin: 0 0 20px; color: var(--k777-green-dark); font-size: clamp(28px, 4vw, 39px); line-height: 1.18; text-align: center; font-weight: 900; letter-spacing: 0; }
.k777-intro-copy { max-width: 960px; margin: 0 auto 34px; color: #49625e; font-size: 16px; }
.k777-intro-copy p { margin: 0 0 16px; }
.k777-feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.k777-feature {
  min-width: 0;
  padding: 27px 22px 25px;
  border: 1px solid var(--k777-line);
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 16px 34px rgba(0, 64, 54, .06);
  text-align: center;
}
.k777-feature-icon { display: inline-grid; min-width: 70px; height: 70px; place-items: center; margin-bottom: 14px; color: var(--k777-green); border: 3px solid #cce5de; border-radius: 999px; font-size: 18px; font-weight: 900; }
.k777-feature h3 { margin: 0 0 10px; color: var(--k777-green-dark); font-size: 22px; line-height: 1.18; font-weight: 900; }
.k777-feature p { margin: 0; color: #536b67; font-size: 15px; line-height: 1.62; }
.k777-news { background: linear-gradient(180deg, #f8fdfb 0%, #fff 100%); }
.k777-title-rule { display: grid; grid-template-columns: minmax(40px, 1fr) auto minmax(40px, 1fr); gap: 24px; align-items: center; margin-bottom: 26px; }
.k777-title-rule::before, .k777-title-rule::after { content: ""; height: 2px; background: linear-gradient(90deg, transparent, rgba(0,142,115,.58), transparent); }
.k777-title-rule .k777-section-title { margin: 0; }
.k777-post-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 18px; }
.k777-post {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--k777-line);
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 14px 30px rgba(0, 64, 54, .07);
}
.k777-post-media { position: relative; aspect-ratio: 1.72; overflow: hidden; background: var(--k777-deep); }
.k777-post-media img { width: 100%; height: 100%; object-fit: cover; }
.k777-post-tag {
  position: absolute;
  top: 11px;
  left: 11px;
  z-index: 1;
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 0 9px;
  color: #fff;
  background: var(--k777-green);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}
.k777-post-body { padding: 17px 16px 18px; }
.k777-post h3 { margin: 0 0 10px; color: var(--k777-green-dark); font-size: 18px; line-height: 1.25; font-weight: 900; }
.k777-post h3 a:hover, .k777-post h3 a:focus-visible { color: var(--k777-green); outline: none; }
.k777-post p { margin: 0 0 14px; color: #536b67; font-size: 14px; line-height: 1.56; }
.k777-post-meta { display: flex; align-items: center; gap: 8px; color: #6c817d; font-size: 13px; }
.k777-news-action { display: flex; justify-content: center; margin-top: 26px; }
.k777-categories { background: #fff; }
.k777-category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.k777-category {
  display: block;
  min-height: 202px;
  padding: 24px;
  border: 1px solid var(--k777-line);
  border-radius: 7px;
  background: linear-gradient(180deg, #fff, #fbfefd);
  box-shadow: 0 14px 28px rgba(0, 64, 54, .06);
}
.k777-category span { display: grid; width: 46px; height: 46px; place-items: center; margin-bottom: 15px; border-radius: 999px; color: #fff; background: linear-gradient(135deg, var(--k777-green-2), var(--k777-green)); font-weight: 900; }
.k777-category h3 { margin: 0 0 8px; color: var(--k777-green-dark); font-size: 21px; font-weight: 900; }
.k777-category p { margin: 0; color: #536b67; font-size: 15px; line-height: 1.62; }
.k777-guide { padding-top: 30px; background: #fff; }
.k777-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--k777-line); border-radius: 7px; background: #fff; box-shadow: var(--k777-shadow); }
.k777-step { position: relative; display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 16px; min-width: 0; padding: 28px 26px; }
.k777-step + .k777-step { border-left: 1px solid var(--k777-line); }
.k777-step-number { display: grid; width: 50px; height: 50px; place-items: center; border-radius: 999px; color: #fff; background: linear-gradient(135deg, var(--k777-green-2), var(--k777-green)); font-size: 23px; font-weight: 900; }
.k777-step h3 { margin: 0 0 8px; color: var(--k777-green-dark); font-size: 18px; line-height: 1.25; font-weight: 900; }
.k777-step p { margin: 0 0 16px; color: #536b67; font-size: 14px; line-height: 1.55; }
.k777-step img { width: 120px; max-width: 72%; border-radius: 7px; }
.k777-faq { background: #f8fdfb; }
.k777-faq-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.k777-faq-grid article { padding: 22px; border: 1px solid var(--k777-line); border-radius: 7px; background: #fff; box-shadow: 0 14px 28px rgba(0,64,54,.06); }
.k777-faq-grid h3 { margin: 0 0 8px; color: var(--k777-green-dark); font-size: 18px; line-height: 1.28; }
.k777-faq-grid p { margin: 0; color: #536b67; font-size: 14px; }
.k777-footer { color: #dcf8f0; background: linear-gradient(135deg, #005044, #00382f); }
.k777-footer-grid { display: grid; grid-template-columns: 1.25fr .8fr .8fr 1fr; gap: 42px; padding: 44px 0 34px; }
.k777-footer .k777-logo { color: #27c796; font-size: 44px; }
.k777-footer .k777-logo span { color: #fff; }
.k777-footer p, .k777-footer li { color: rgba(220, 248, 240, .86); font-size: 14px; }
.k777-footer h3 { margin: 0 0 15px; color: #fff; font-size: 18px; }
.k777-footer ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
.k777-social { display: flex; gap: 10px; margin-top: 18px; }
.k777-social span { display: grid; min-width: 36px; height: 36px; padding: 0 8px; place-items: center; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; color: #fff; font-size: 13px; font-weight: 900; }
.k777-copyright { border-top: 1px solid rgba(255,255,255,.16); padding: 16px 0 18px; color: rgba(220,248,240,.78); font-size: 14px; }
.k777-copyright-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.k777-age { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; margin-right: 10px; border: 3px solid #e33b23; border-radius: 999px; color: #fff; font-size: 12px; font-weight: 900; }
.k777-article-hero {
  color: #fff;
  background:
    radial-gradient(circle at 76% 12%, rgba(245,201,69,.24), transparent 22%),
    linear-gradient(128deg, #00423d, #00332f 55%, #006d55);
}
.k777-article-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 460px); gap: 30px; align-items: center; min-height: 360px; padding: 44px 0; }
.k777-article-hero h1 { margin: 0 0 14px; color: #fff; font-size: clamp(34px, 5vw, 60px); line-height: 1.08; font-weight: 900; }
.k777-article-hero p { max-width: 700px; color: rgba(255,255,255,.88); font-size: 18px; font-weight: 700; }
.k777-article-hero img { width: 100%; border-radius: 12px; box-shadow: 0 18px 42px rgba(0,0,0,.22); }
.k777-article-main { background: #f8fdfb; }
.k777-article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 28px; align-items: start; }
.k777-article-card, .k777-sidebar { border: 1px solid var(--k777-line); border-radius: 7px; background: #fff; box-shadow: 0 16px 34px rgba(0,64,54,.07); }
.k777-article-card { padding: clamp(24px, 4vw, 42px); }
.k777-article-info { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; color: #70837f; font-size: 14px; }
.k777-article-body { color: #2f4b46; font-size: 16px; line-height: 1.86; }
.k777-article-body h2, .k777-article-body h3 { color: var(--k777-green-dark); line-height: 1.26; }
.k777-article-body h2 { margin: 28px 0 10px; font-size: 27px; }
.k777-article-body h3 { margin: 22px 0 8px; font-size: 21px; }
.k777-article-body p, .k777-article-body ul, .k777-article-body ol { margin: 0 0 16px; }
.k777-callout { margin: 24px 0 0; padding: 18px 20px; border-left: 5px solid var(--k777-gold); border-radius: 7px; background: #f4fbf8; color: var(--k777-green-dark); font-weight: 800; }
.k777-sidebar { position: sticky; top: 150px; padding: 22px; }
.k777-sidebar h2 { margin: 0 0 14px; color: var(--k777-green-dark); font-size: 22px; line-height: 1.25; }
.k777-side-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.k777-side-list li { padding: 12px 13px; border: 1px solid var(--k777-line); border-radius: 7px; color: #4d6762; background: #fbfefd; font-size: 14px; }
.k777-blog-page { min-height: 560px; }
@media (max-width: 980px) {
  .k777-hero-grid, .k777-article-hero-grid { grid-template-columns: 1fr; padding: 42px 0 46px; }
  .k777-hero-visual { max-width: 680px; margin: 0 auto; }
  .k777-feature-grid, .k777-footer-grid, .k777-faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .k777-category-grid, .k777-article-layout { grid-template-columns: 1fr; }
  .k777-sidebar { position: static; }
}
@media (max-width: 720px) {
  .k777-shell { width: min(100% - 22px, 1180px); }
  .k777-topbar { align-items: flex-start; flex-direction: column; gap: 14px; padding: 14px 0; }
  .k777-actions { width: 100%; justify-content: space-between; gap: 10px; }
  .k777-actions .k777-btn { flex: 0 1 calc((100% - 10px) / 2); min-width: 0; padding: 0 8px; font-size: 13px; }
  .k777-nav a { min-height: 50px; padding: 0 15px; font-size: 14px; }
  .k777-hero-grid { min-height: 0; }
  .k777-hero-copy p { font-size: 17px; }
  .k777-brand-line { font-size: clamp(38px, 13vw, 52px); }
  .k777-subline { font-size: clamp(25px, 8vw, 34px); }
  .k777-hero h1 strong { font-size: clamp(70px, 21vw, 96px); }
  .k777-feature-grid, .k777-footer-grid, .k777-steps, .k777-faq-grid { grid-template-columns: 1fr; }
  .k777-title-rule { grid-template-columns: 1fr; gap: 10px; }
  .k777-title-rule::before, .k777-title-rule::after { display: none; }
  .k777-step + .k777-step { border-left: 0; border-top: 1px solid var(--k777-line); }
  .k777-step { grid-template-columns: 48px minmax(0, 1fr); padding: 24px 18px; }
  .k777-copyright-row { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}