/* ==========================================================================
   Invishar — landing page
   Dikonversi dari desain "Invishar v2" (Claude Design canvas) ke CSS statis.
   Breakpoint mobile: 760px (mengikuti ambang `mob` di desain asli).
   ========================================================================== */

/* --------------------------------------------------------------- 1. Token */
:root {
  /* Ground & permukaan */
  --bg:            #eef4ea;
  --surface:       #f7faf5;
  --white:         #ffffff;

  /* Tinta */
  --ink:           #1a1917;
  --ink-80:        rgba(26, 25, 23, 0.80);
  --ink-72:        rgba(26, 25, 23, 0.72);
  --ink-70:        rgba(26, 25, 23, 0.70);
  --ink-68:        rgba(26, 25, 23, 0.68);
  --ink-65:        rgba(26, 25, 23, 0.65);
  --ink-62:        rgba(26, 25, 23, 0.62);
  --ink-58:        rgba(26, 25, 23, 0.58);
  --ink-55:        rgba(26, 25, 23, 0.55);
  --ink-50:        rgba(26, 25, 23, 0.50);

  /* Garis */
  --line:          rgba(26, 25, 23, 0.10);
  --line-strong:   rgba(26, 25, 23, 0.16);
  --line-input:    rgba(26, 25, 23, 0.18);
  --line-btn:      rgba(26, 25, 23, 0.20);
  --line-faq:      rgba(26, 25, 23, 0.12);

  /* Hijau */
  --green-900:     #23441c;
  --green-700:     #2f5c26;
  --green-600:     #3a7330;
  --green-500:     #3f7a33;
  --green-400:     #4f8f3f;
  --green-300:     #7fae6d;
  --green-200:     #9ec68e;
  --green-100:     #d6e7cd;

  /* Di atas panel gelap */
  --on-dark:       #eef4ea;
  --on-dark-76:    rgba(238, 244, 234, 0.76);
  --on-dark-70:    rgba(238, 244, 234, 0.70);
  --on-dark-60:    rgba(238, 244, 234, 0.60);
  --on-dark-50:    rgba(238, 244, 234, 0.50);
  --on-dark-line:  rgba(238, 244, 234, 0.16);

  /* Bayangan */
  --sh-card:       0 8px 24px rgba(35, 68, 28, 0.10);
  --sh-card-dark:  0 12px 30px rgba(35, 68, 28, 0.22);
  --sh-hover:      0 12px 28px rgba(35, 68, 28, 0.10);
  --sh-hover-soft: 0 10px 24px rgba(35, 68, 28, 0.08);
  --sh-btn:        0 8px 20px rgba(35, 68, 28, 0.22);
  --sh-menu:       0 14px 34px rgba(35, 68, 28, 0.14);

  /* Tipografi */
  --font-ui:       "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-body:     "DM Sans", system-ui, -apple-system, sans-serif;

  /* Lain-lain */
  --wrap:          1180px;
  --gutter:        clamp(16px, 4vw, 28px);
  --r-sm:          10px;
  --r-md:          16px;
  --r-lg:          18px;
  --r-xl:          24px;
  --r-pill:        999px;
  --ease:          cubic-bezier(.22, .68, .3, 1);
}

/* ---------------------------------------------------------------- 2. Base */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

* { -webkit-tap-highlight-color: rgba(63, 122, 51, 0.15); }

img { max-width: 100%; height: auto; display: block; }

a { color: var(--green-700); }
a:hover { color: var(--green-500); }

h1, h2, h3, h4 {
  font-family: var(--font-ui);
  text-wrap: balance;
}

p { text-wrap: pretty; }

:focus-visible {
  outline: 2px solid var(--green-500);
  outline-offset: 2px;
}

::selection {
  background: var(--green-100);
  color: var(--green-900);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--green-900);
  color: var(--on-dark);
  font-family: var(--font-ui);
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 0 0 var(--r-sm) 0;
  text-decoration: none;
}
.skip:focus { left: 0; color: var(--on-dark); }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section[id] { scroll-margin-top: 76px; }

/* ------------------------------------------------------------- 3. Tombol */
.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  padding: 13px 24px;
  border: none;
  border-radius: var(--r-pill);
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease,
              color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.btn-solid {
  background: var(--green-900);
  color: var(--on-dark);
}
.btn-solid:hover {
  background: var(--green-700);
  color: var(--on-dark);
  transform: translateY(-2px);
  box-shadow: var(--sh-btn);
}
.btn-solid:active { transform: translateY(0); box-shadow: none; }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--line-btn);
  color: var(--ink);
}
.btn-outline:hover {
  border-color: var(--green-400);
  color: var(--green-700);
  transform: translateY(-2px);
}

.btn-light {
  background: var(--on-dark);
  color: var(--green-900);
}
.btn-light:hover {
  background: var(--green-100);
  color: var(--green-900);
  transform: translateY(-2px);
}

.btn-sm { font-size: 14.5px; padding: 10px 18px; }
.btn-block { width: 100%; padding: 14px 22px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* -------------------------------------------------------- 4. Teks berulang */
.kicker {
  font-family: var(--font-ui);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--green-600);
  margin: 0;
}
.kicker.light { color: var(--green-200); font-size: 12px; letter-spacing: 0.1em; }
.kicker.muted { color: var(--ink-50); letter-spacing: 0.1em; margin-bottom: 5px; }

.lead {
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.58;
  color: var(--ink-72);
  max-width: 42ch;
  margin: 0 0 26px;
}

.sec-sub {
  font-size: 15px;
  line-height: 1.58;
  color: var(--ink-65);
  margin: 0;
}
.sec-sub.narrow { max-width: 34ch; font-size: 15.5px; color: var(--ink-70); }

.sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 18px;
  margin-bottom: 24px;
}
.sec-head > div:first-child { min-width: 0; margin-right: auto; }
.sec-head h2 {
  font-weight: 700;
  font-size: clamp(28px, 5vw, 46px);
  letter-spacing: -0.038em;
  line-height: 1.04;
  margin: 0 0 8px;
}

.link-more {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 14.5px;
  text-decoration: none;
}

/* Angka selalu tabular */
.stat-num, .harga, .no, .step-no, .m-no, .m-dur, .footer-copy {
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ 5. Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(238, 244, 234, 0.90);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding-block: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  text-decoration: none;
  color: inherit;
}
.brand:hover { color: inherit; }
.brand img { width: 30px; height: 30px; border-radius: 6px; }
.brand span {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav-links > a {
  color: var(--ink-72);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color .16s ease;
}
.nav-links > a:hover { color: var(--green-900); }
.nav-links > a.btn { color: var(--on-dark); }

.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--line-strong);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}
.burger span {
  display: block;
  width: 18px;
  height: 1.8px;
  background: var(--ink);
  border-radius: 2px;
}

/* ----------------------------------------------------------------- 6. Hero */
.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(290px, 100%), 1fr));
  gap: clamp(30px, 5vw, 48px);
  align-items: center;
  padding-top: clamp(34px, 6vw, 52px);
  padding-bottom: 14px;
}

.hero-copy { min-width: 0; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--green-700);
  background: var(--green-100);
  padding: 6px 13px;
  border-radius: var(--r-pill);
  margin: 0 0 20px;
}

.hero h1 {
  font-weight: 700;
  font-size: clamp(36px, 7.4vw, 76px);
  line-height: 0.99;
  letter-spacing: -0.042em;
  margin: 0 0 18px;
}
.hero h1 em { font-style: normal; color: var(--green-600); }

/* Tumpukan kartu melayang */
.stack {
  min-width: 0;
  position: relative;
  height: 420px;
}

.stack-card {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--sh-card);
  border-radius: var(--r-md);
  padding: 20px;
  animation: inv-float 7s ease-in-out infinite;
}
.stack-card .kicker { font-size: 11.5px; letter-spacing: 0.08em; }
.stack-title {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.025em;
  margin: 8px 0 6px;
}
.stack-title.tight { margin-bottom: 0; }
.stack-desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-68);
  margin: 0;
}

.stack .c1 { top: 6px;   left: 5%;  width: 74%; transform: rotate(-4deg);   animation-delay: 0s; }
.stack .c2 { top: 172px; left: 20%; width: 76%; transform: rotate(2.5deg);  animation-delay: .9s; }
.stack .c3 {
  top: 302px; left: 3%; width: 72%; transform: rotate(-1.5deg); animation-delay: 1.8s;
  background: var(--green-900);
  color: var(--on-dark);
  border-color: transparent;
  box-shadow: var(--sh-card-dark);
}
.stack .c3 .kicker { color: var(--green-200); }

@keyframes inv-float {
  0%, 100% { translate: 0 0; }
  50%      { translate: 0 -7px; }
}

/* -------------------------------------------------------------- 7. Marquee */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 13px 0;
  margin-top: 26px;
}
.marquee-track {
  display: flex;
  gap: 44px;
  width: max-content;
  animation: inv-slide 28s linear infinite;
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink-50);
  white-space: nowrap;
}

@keyframes inv-slide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------------------------------------------------------- 8. Tiga pintu */
.doors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 16px;
  padding-top: clamp(40px, 6vw, 56px);
}

.door {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 26px;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.door:hover {
  border-color: var(--green-300);
  transform: translateY(-3px);
  box-shadow: var(--sh-hover-soft);
}
.door .no {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green-600);
  margin: 0;
}
.door h3 {
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.028em;
  margin: 12px 0 8px;
}
.door p {
  font-size: 14.5px;
  line-height: 1.58;
  color: var(--ink-70);
  margin: 0;
}

/* -------------------------------------------------------------- 9. Statistik */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(150px, 100%), 1fr));
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  margin-top: clamp(36px, 5vw, 52px);
}
.stat { background: var(--bg); padding: 22px 20px; }
.stat-num {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--green-900);
  margin: 0;
}
.stat-lbl {
  font-size: 13.5px;
  color: var(--ink-62);
  margin: 7px 0 0;
}

/* ------------------------------------------------------------- 10. Katalog */
#katalog { padding-top: clamp(44px, 6vw, 64px); }

.tabs { display: flex; flex-wrap: wrap; gap: 8px; }

.tab {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  padding: 10px 17px;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--ink-70);
  border: 1.5px solid var(--line-strong);
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.tab:hover { border-color: var(--green-400); color: var(--green-700); }
.tab.is-on {
  background: var(--green-900);
  color: var(--on-dark);
  border-color: var(--green-900);
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(270px, 100%), 1fr));
  gap: 18px;
}

.item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.item:hover {
  border-color: var(--green-300);
  transform: translateY(-4px);
  box-shadow: var(--sh-hover);
}
.item[hidden] { display: none; }

.item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.badge {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--green-100);
  color: var(--green-900);
  padding: 4px 10px;
  border-radius: var(--r-pill);
}
.item h3 {
  font-weight: 600;
  font-size: 23px;
  letter-spacing: -0.03em;
  line-height: 1.16;
  margin: 0;
}
.item > p {
  font-size: 14.5px;
  line-height: 1.56;
  color: var(--ink-70);
  margin: 0;
}
.item-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: auto;
}
.harga { font-size: 13px; color: var(--ink-58); }
.item-foot a {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  margin-left: auto;
  white-space: nowrap;
}

/* ---------------------------------------------------------------- 11. Jasa */
#jasa, #kelas, #sorotan, #tanya { padding-top: clamp(50px, 7vw, 76px); }

.panel-dark {
  background: var(--green-900);
  color: var(--on-dark);
  border-radius: var(--r-xl);
  padding: clamp(26px, 4vw, 44px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: clamp(28px, 4vw, 44px);
  align-items: start;
}
.panel-dark > div { min-width: 0; }
.panel-dark .kicker { margin-bottom: 14px; }

.h2-dark {
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 42px);
  letter-spacing: -0.038em;
  line-height: 1.05;
  margin: 0 0 16px;
}
.panel-lead {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--on-dark-76);
  max-width: 40ch;
  margin: 0 0 24px;
}

.steps { list-style: none; margin: 0; padding: 0; }
.steps li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--on-dark-line);
}
.step-no {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 15px;
  color: var(--green-200);
}
.steps h4 {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.025em;
  margin: 0 0 5px;
}
.steps p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--on-dark-70);
  margin: 0;
}

/* --------------------------------------------------------------- 12. Kelas */
.kelas {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  overflow: hidden;
}
.kelas-copy {
  padding: clamp(24px, 3.4vw, 38px);
  border-bottom: 1px solid var(--line);
}
.kelas-copy .kicker { font-size: 12px; letter-spacing: 0.1em; margin-bottom: 14px; }
.kelas-copy h2 {
  font-weight: 700;
  font-size: clamp(24px, 4vw, 38px);
  letter-spacing: -0.036em;
  line-height: 1.06;
  margin: 0 0 14px;
}
.kelas-copy .sec-sub { margin-bottom: 22px; }
.kelas-copy .btn { font-size: 15px; padding: 12px 22px; }

.kelas-modul { padding: clamp(24px, 3.4vw, 38px); }

.modul { list-style: none; margin: 0; padding: 0; }
.modul li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(26, 25, 23, 0.08);
  font-size: 14.5px;
}
.m-no {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 12.5px;
  color: var(--green-400);
  min-width: 22px;
}
.m-judul { color: var(--ink-80); min-width: 0; }
.m-dur {
  margin-left: auto;
  font-size: 12.5px;
  color: var(--ink-50);
  white-space: nowrap;
}
.note {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-58);
  margin: 18px 0 0;
}

/* ------------------------------------------------------------- 13. Sorotan */
.shot {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 16px;
  margin: 0;
}
.shot-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: var(--green-100);
  display: grid;
  place-items: center;
}
.shot-frame img { width: 100%; height: 100%; object-fit: cover; }
.shot-ph {
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--green-700);
  text-align: center;
  padding: 0 16px;
}
.shot figcaption { margin: 0; }
.shot-title {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.026em;
  margin: 16px 0 6px;
}
.shot figcaption p:last-child {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-68);
  margin: 0;
}

/* ---------------------------------------------------------- 14. Tanya jawab */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}
.faq-grid > div { min-width: 0; }
.faq-grid h2 {
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 44px);
  letter-spacing: -0.04em;
  line-height: 1.04;
  margin: 0 0 12px;
}

.faq-row { border-bottom: 1px solid var(--line-faq); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  background: none;
  border: none;
  padding: 18px 2px;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 16.5px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.faq-q > span:first-child { min-width: 0; }
.faq-q:hover { color: var(--green-700); }

.faq-icon {
  margin-left: auto;
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  color: var(--green-600);
  transition: transform .24s var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon { transform: rotate(135deg); }

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  overflow: hidden;
  transition: grid-template-rows .3s var(--ease), opacity .3s ease;
}
.faq-a.is-open { grid-template-rows: 1fr; opacity: 1; }
.faq-a > div { min-height: 0; overflow: hidden; }
.faq-a p {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-70);
  margin: 0;
  padding: 0 2px 18px;
}

/* -------------------------------------------------------------- 15. Kontak */
.kontak {
  padding-top: clamp(50px, 7vw, 76px);
  padding-bottom: clamp(54px, 7vw, 84px);
}
.kontak-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(290px, 100%), 1fr));
  gap: clamp(30px, 5vw, 48px);
  align-items: start;
}
.kontak-grid > div { min-width: 0; }

.h2-xl {
  font-weight: 700;
  font-size: clamp(30px, 5.4vw, 52px);
  letter-spacing: -0.042em;
  line-height: 1;
  margin: 0 0 16px;
}
.kontak .lead { font-size: 16px; }

.kontak-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  font-size: 15px;
}
.kontak-meta a { font-weight: 500; }

.form {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(20px, 3vw, 26px);
}
.field label {
  display: block;
  font-family: var(--font-ui);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-55);
  margin-bottom: 7px;
}
.form input,
.form textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 16px;          /* 16px mencegah iOS zoom saat fokus */
  padding: 12px 14px;
  border: 1px solid var(--line-input);
  border-radius: var(--r-sm);
  background: var(--white);
  color: var(--ink);
  transition: border-color .16s ease, box-shadow .16s ease;
}
.form input:hover,
.form textarea:hover { border-color: var(--green-300); }
.form input:focus,
.form textarea:focus {
  border-color: var(--green-400);
  box-shadow: 0 0 0 3px rgba(79, 143, 63, 0.15);
  outline: none;
}
.form textarea { resize: vertical; }

/* Perangkap robot: harus tetap ada di DOM, tapi tidak boleh terlihat maupun
   terbaca pembaca layar. display:none dihindari karena sebagian pengirim
   otomatis justru melewatinya. */
.jebakan {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-note {
  font-size: 13px;
  color: var(--ink-55);
  margin: 0;
  text-align: center;
}
.form.is-sent .form-note { color: var(--green-700); font-weight: 500; }
.form.is-failed .form-note { color: #a23a2a; font-weight: 500; }

/* -------------------------------------------------------------- 16. Footer */
.footer { background: var(--ink); color: var(--on-dark); }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-block: 28px;
}
.footer img { width: 26px; height: 26px; border-radius: 5px; }
.footer-brand {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.03em;
}
.footer-tag { font-size: 13.5px; color: var(--on-dark-60); }
.footer-copy {
  margin-left: auto;
  font-size: 13px;
  color: var(--on-dark-50);
}

/* --------------------------------------------------- 17. Reveal saat scroll */
/* Hanya aktif kalau JS hidup — tanpa JS semua konten tetap terlihat.
   Memakai properti `translate`, bukan `transform`, supaya rotasi kartu hero
   dan efek angkat saat hover tidak saling menimpa. */
html.js [data-reveal],
html.js [data-reveal-fade] {
  opacity: 0;
  transition: opacity .62s var(--ease), translate .62s var(--ease);
}
html.js [data-reveal] { translate: 0 18px; }

html.js [data-reveal].is-in,
html.js [data-reveal-fade].is-in {
  opacity: 1;
  translate: 0 0;
}

/* ------------------------------------------------------------ 18. Responsif */
@media (max-width: 760px) {
  .burger { display: flex; }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    position: absolute;
    top: 62px;
    left: 12px;
    right: 12px;
    background: var(--surface);
    border: 1px solid var(--line-faq);
    border-radius: var(--r-md);
    padding: 12px;
    box-shadow: var(--sh-menu);
  }
  .nav-links.is-open { display: flex; }
  .nav-links > a { padding: 10px 8px; }
  .nav-links > a.btn { margin-top: 4px; }

  /* Tumpukan kartu jadi daftar biasa */
  .stack { height: auto; }
  .stack-card {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    margin-bottom: 12px;
    transform: none;
    animation: none;
  }
  .stack .c1, .stack .c2, .stack .c3 {
    top: auto; left: auto; width: 100%; transform: none; animation: none;
  }

  .kelas-copy { border-bottom: 1px solid var(--line); }
}

@media (min-width: 761px) {
  /* Dua kolom: garis pemisah kelas jadi vertikal, bukan horizontal */
  .kelas-copy {
    border-bottom: none;
    border-right: 1px solid var(--line);
  }
}

/* --------------------------------------------------- 19. Hormati preferensi */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .marquee-track { animation: none; }
  .stack-card { animation: none; }

  html.js [data-reveal],
  html.js [data-reveal-fade] { opacity: 1; translate: 0 0; }
}