/* ============================================================
   cert.sslnow — 랜딩 전용 CSS (guard/www 구조 준용, 다른 폴더와 공유 금지)
   테마: 기본 = 라이트 / [data-theme="dark"] = 다크
         data-theme 없음(시스템 모드) = OS 설정(prefers-color-scheme) 따름
   포인트: teal (인증서 = Cert 컬러), 로고 마크는 전 사이트 공통(우측 선 #e8920c)
   ============================================================ */

/* ---------- 라이트 팔레트 (기본) ---------- */
:root {
  --bg: #f6f7fb;
  --bg-2: #eef1f8;
  --panel: #ffffff;
  --panel-2: #f3f6fc;
  --line: #e2e7f1;
  --line-soft: #edf0f7;
  --text: #1a2236;
  --text-2: #54607a;
  --text-3: #8b97b0;
  --amber: #e8920c;
  --amber-2: #d97d05;
  --teal: #119e90;
  --teal-2: #0d8377;
  --blue: #2f6fe0;
  --green: #1f9e54;
  --violet: #7a5fe0;
  --red: #e0484b;
  --hero-grid: rgba(20, 30, 60, .04);
  --card-glow: rgba(17, 158, 144, .07);
  --hero-glow: rgba(17, 158, 144, .13);
  --shadow: 0 24px 60px -30px rgba(30, 40, 70, .28);
  --cert-price: #034f4a;
  --cert-price-unit: #4f5d76;
  --cert-meta: #344158;
  --cert-card-bg: #ffffff;
  --cert-card-border: #c4d0e3;
  --cert-item-shadow: 0 7px 16px -12px rgba(30, 40, 70, .38);
  --cert-item-rest: 0 12px 24px -16px rgba(30, 40, 70, .38), 0 3px 8px -4px rgba(30, 40, 70, .12);
  --types-grad-end: #e5eaf4;
  color-scheme: light;
}

/* ---------- 다크 팔레트 (명시 선택) ---------- */
:root[data-theme="dark"] {
  --bg: #171b27;
  --bg-2: #1b2030;
  --panel: #212939;
  --panel-2: #28324a;
  --line: #34405e;
  --line-soft: #2c3650;
  --text: #eef2fa;
  --text-2: #a3b0cc;
  --text-3: #6f7c9c;
  --amber: #ffb43d;
  --amber-2: #ff9a2e;
  --teal: #4fd1c5;
  --teal-2: #3bb3a8;
  --blue: #5b9dff;
  --green: #52e08a;
  --violet: #b39dff;
  --red: #ff6f6f;
  --hero-grid: rgba(255, 255, 255, .03);
  --card-glow: rgba(79, 209, 197, .08);
  --hero-glow: rgba(79, 209, 197, .15);
  --shadow: 0 30px 70px -30px rgba(0, 0, 0, .7);
  --cert-price: #8ff4ea;
  --cert-price-unit: #d0d9ea;
  --cert-meta: #d5dceb;
  --cert-card-bg: #26314b;
  --cert-card-border: #4f6087;
  --cert-item-shadow: 0 7px 16px -12px rgba(0, 0, 0, .7);
  --cert-item-rest: 0 14px 28px -16px rgba(0, 0, 0, .6), 0 3px 8px -4px rgba(0, 0, 0, .35);
  --types-grad-end: #121724;
  color-scheme: dark;
}

/* ---------- 시스템 모드(속성 없음)에서 OS가 다크일 때 ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --bg: #171b27;
    --bg-2: #1b2030;
    --panel: #212939;
    --panel-2: #28324a;
    --line: #34405e;
    --line-soft: #2c3650;
    --text: #eef2fa;
    --text-2: #a3b0cc;
    --text-3: #6f7c9c;
    --amber: #ffb43d;
    --amber-2: #ff9a2e;
    --teal: #4fd1c5;
    --teal-2: #3bb3a8;
    --blue: #5b9dff;
    --green: #52e08a;
    --violet: #b39dff;
    --red: #ff6f6f;
    --hero-grid: rgba(255, 255, 255, .03);
    --card-glow: rgba(79, 209, 197, .08);
    --hero-glow: rgba(79, 209, 197, .15);
    --shadow: 0 30px 70px -30px rgba(0, 0, 0, .7);
    --cert-price: #8ff4ea;
    --cert-price-unit: #d0d9ea;
    --cert-meta: #d5dceb;
    --cert-card-bg: #26314b;
    --cert-card-border: #4f6087;
    --cert-item-shadow: 0 7px 16px -12px rgba(0, 0, 0, .7);
    --cert-item-rest: 0 14px 28px -16px rgba(0, 0, 0, .6), 0 3px 8px -4px rgba(0, 0, 0, .35);
    --types-grad-end: #121724;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .4s, color .4s;
  overflow-x: hidden;
}
.mono { font-family: 'JetBrains Mono', monospace; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ===== nav ===== */
nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-in { max-width: 1200px; margin: 0 auto; padding: 16px 28px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 20px; letter-spacing: -.02em; }
.logo a { color: inherit; text-decoration: none; }
.logo .logo-main { display: flex; align-items: center; gap: 12px; }

.logo .brand-sub { color: var(--teal); }
/* 브랜드 로고 — 공통 형태, 오른쪽 짧은 선 = cert 대표색(teal) */
.logo .mark { position: relative; width: 38px; height: 38px; border-radius: 11px; background: #12213b; box-shadow: 0 5px 14px rgba(18, 33, 59, .18); }
.logo .mark::before,
.logo .mark::after { content: ""; position: absolute; border-radius: 999px; transform: rotate(-42deg); background: #fff; }
.logo .mark::before { width: 6px; height: 19px; left: 11px; top: 10px; }
.logo .mark::after { width: 6px; height: 14px; left: 21px; top: 9px; background: var(--teal); }
:root[data-theme="dark"] .logo .mark { background: #3e5fbf; box-shadow: 0 5px 16px rgba(0, 0, 0, .28); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .logo .mark { background: #3e5fbf; box-shadow: 0 5px 16px rgba(0, 0, 0, .28); }
}
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a { color: var(--text-2); text-decoration: none; font-size: 15px; font-weight: 600; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; border: none; cursor: pointer; border-radius: 12px; text-decoration: none; transition: transform .15s, box-shadow .2s, background .2s; font-size: 15px; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--teal), var(--teal-2)); color: #0d1420; padding: 13px 24px; box-shadow: 0 12px 28px -10px var(--teal); }
.btn-primary:hover { box-shadow: 0 16px 34px -10px var(--teal); }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--text); padding: 13px 24px; }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn-lg { font-size: 17px; padding: 17px 32px; }
.nav-cta .btn-ghost {
  padding: 9px 18px;                 /* 컴팩트 */
  border-color: color-mix(in srgb, var(--teal) 55%, var(--line));
  color: var(--teal);                /* 대표색 */
}
.nav-cta .btn-ghost:hover { border-color: var(--teal); background: color-mix(in srgb, var(--teal) 10%, transparent); }
@media (max-width: 820px) { .nav-links { display: none; } }

/* ===== hero ===== */
.hero { position: relative; padding: 96px 0 80px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background-image: linear-gradient(var(--hero-grid) 1px, transparent 1px), linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 50% 35%, #000 30%, transparent 78%);
}
.hero::after {
  content: ""; position: absolute; top: -180px; right: -120px; width: 560px; height: 560px; z-index: 0;
  background: radial-gradient(circle, var(--hero-glow), transparent 65%);
  pointer-events: none;
}
.hero-in { position: relative; z-index: 1; text-align: center; max-width: 1100px; margin: 0 auto; } /* 본문 1200보다 한 뼘 좁게 — 히어로 호흡 유지 */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 700; letter-spacing: .08em;
  color: var(--teal); background: var(--card-glow);
  border: 1px solid color-mix(in srgb, var(--teal) 40%, transparent);
  padding: 8px 16px; border-radius: 999px; margin-bottom: 30px;
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 12px var(--teal); }
h1.hero-title {
  font-size: clamp(40px, 6.4vw, 76px); font-weight: 800; letter-spacing: -.035em; line-height: 1.04;
  margin-bottom: 26px;
}
.accent {
  background: linear-gradient(120deg, var(--teal), var(--teal-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: clamp(17px, 2.2vw, 22px); color: var(--text-2); max-width: 900px; margin: 0 auto 40px; font-weight: 500; }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.hero-note { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--text-3); }
.hero-note b { color: var(--text-2); }

/* trust strip — 본문 폰트 통일 */
.trust { display: flex; gap: 50px; justify-content: center; flex-wrap: wrap; margin-top: 62px; padding-top: 40px; border-top: 1px solid var(--line); }
.trust .t-i { text-align: center; }
.trust .t-v { font-size: 32px; font-weight: 800; letter-spacing: -.03em; }
.trust .t-l { font-size: 13.5px; color: var(--text-3); margin-top: 4px; }

/* ===== sections ===== */
section.block { padding: 90px 0; position: relative; }

/* 인증서 라인업: 아래로 갈수록 짙어지는 배경 — 밝은 카드와 명도 대비로 또렷하게 */
#types { background: linear-gradient(180deg, var(--bg) 0%, var(--types-grad-end) 100%); }
.sec-head { text-align: center; max-width: 900px; margin: 0 auto 58px; }
.sec-tag { font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--teal); margin-bottom: 14px; }
.sec-title { font-size: clamp(30px, 4.2vw, 46px); font-weight: 800; letter-spacing: -.03em; line-height: 1.15; margin-bottom: 16px; }
.sec-desc { font-size: 18px; color: var(--text-2); }

/* ===== SSL 상품 캐러셀 (자동 흐름 + 버튼 제어) ===== */
.carousel-shell {
  position: relative;
  margin-top: 8px;
}
.carousel-shell + .carousel-shell { margin-top: 4px; }
.carousel {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  cursor: grab;
  touch-action: pan-y;
  -webkit-tap-highlight-color: transparent;
}
.carousel-shell.is-dragging .carousel { cursor: grabbing; }
.carousel:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
  border-radius: 18px;
}
.car-track {
  display: flex;
  gap: 18px;
  width: max-content;
  padding: 16px 0;
  will-change: transform;
}
.carousel-shell.is-static .carousel {
  cursor: default;
  -webkit-mask-image: none;
  mask-image: none;
}
.carousel-shell.is-static .car-track {
  margin-inline: auto;
  will-change: auto;
}
.carousel-shell.is-static .ssl-item.is-carousel-copy { display: none; }
.carousel-control {
  position: absolute;
  z-index: 3;
  top: 50%;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  color: var(--text);
  box-shadow: var(--shadow);
  cursor: pointer;
  transform: translateY(-50%);
  transition: color .2s, border-color .2s, background .2s, transform .2s, opacity .2s, visibility .2s;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}
.carousel-shell.is-static .carousel-control {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.carousel-control:hover,
.carousel-control:focus-visible,
.carousel-control.is-pressing {
  border-color: var(--teal);
  background: var(--panel-2);
  color: var(--teal);
}
.carousel-control:hover { transform: translateY(-50%) scale(1.06); }
.carousel-control:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.carousel-control svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.carousel-prev { left: 6px; }
.carousel-next { right: 6px; }

.ssl-item { width: 250px; flex-shrink: 0; background: var(--cert-card-bg); border: 1.5px solid var(--cert-card-border); border-radius: 18px; padding: 24px 20px 22px; box-shadow: var(--cert-item-rest); cursor: pointer; user-select: none; transition: transform .22s, border-color .22s, background .22s, box-shadow .22s; }
.ssl-item img { pointer-events: none; -webkit-user-drag: none; }
.ssl-item.is-selected { transform: translateY(-6px); border-color: var(--teal); background: color-mix(in srgb, var(--teal) 7%, var(--cert-card-bg)); box-shadow: 0 0 0 1px var(--teal), var(--cert-item-shadow), var(--cert-item-rest); }
.ssl-item:focus-visible { outline: 2px solid var(--teal); outline-offset: -3px; }
@media (hover: hover) {
  .ssl-item:hover { transform: translateY(-6px); border-color: var(--teal); background: color-mix(in srgb, var(--teal) 7%, var(--cert-card-bg)); box-shadow: 0 0 0 1px var(--teal), var(--cert-item-shadow), var(--cert-item-rest); }
}
.si-brand { display: flex; align-items: center; gap: 8px; min-height: 34px; margin-bottom: 8px; }
.si-brand-logo-frame {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 112px;
  height: 34px;
  padding: 0;
}
.si-brand-logo { display: block; max-width: 100%; max-height: 24px; width: auto; height: auto; object-fit: contain; }
.si-brand-logo.logo-gogetssl { max-height: 32px; }
.si-name { font-size: 18px; font-weight: 800; letter-spacing: -.01em; margin-bottom: 4px; }
.si-for { font-size: 12.5px; color: var(--text-3); margin-bottom: 16px; min-height: 32px; }
.si-price { display: flex; align-items: baseline; gap: 7px; font-family: 'JetBrains Mono', monospace; font-size: 15px; color: var(--text); font-weight: 700; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.si-price-primary { display: inline-flex; align-items: baseline; gap: 3px; white-space: nowrap; }
.si-price b { font-size: 25px; color: var(--cert-price); font-weight: 700; }
.si-price small { font-size: 12px; color: var(--cert-price-unit); font-weight: 600; }
.si-meta { list-style: none; margin: 0; padding: 0; }
.si-meta li { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--cert-meta); font-weight: 600; padding: 3px 0; }
.si-meta li::before { content: "✓"; color: var(--teal); font-weight: 700; flex-shrink: 0; }
.si-tag { display: inline-block; flex-shrink: 0; font-size: 12px; font-weight: 700; padding: 2px 9px; border-radius: 20px; background: color-mix(in srgb, var(--teal) 14%, transparent); color: var(--teal); margin-left: auto; vertical-align: middle; }

/* 모바일: 카드 슬림하게 */
@media (max-width: 560px) {
  .ssl-item { width: 250px; padding: 16px 16px 15px; border-radius: 14px; }
  .si-brand { min-height: 31px; margin-bottom: 6px; }
  .si-brand-logo-frame { width: 92px; height: 31px; padding: 5px 7px; }
  .si-brand-logo { max-height: 21px; }
  .si-name { font-size: 15.5px; }
  .si-for { font-size: 12px; min-height: 30px; margin-bottom: 11px; }
  .si-price { padding: 8px 0; margin-bottom: 10px; font-size: 13px; }
  .si-price b { font-size: 20px; }
  .si-meta li { font-size: 12px; padding: 2px 0; }
  .si-tag { font-size: 12px; padding: 2px 7px; }
  .car-track { gap: 12px; padding: 12px 0; }
  .carousel-control { width: 36px; height: 36px; }
  .carousel-control svg { width: 18px; height: 18px; }
  .carousel-prev { left: 2px; }
  .carousel-next { right: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  .car-track { will-change: auto; }
  .ssl-item, .carousel-control { transition: none; }
}

/* 섹션 하단 안내문 */
.cert-note { text-align: center; color: var(--text-3); font-size: 13px; margin-top: 22px; }

/* ===== 브랜드 목록 ===== */
.brand-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
@media (max-width: 820px) { .brand-grid { grid-template-columns: 1fr; max-width: 440px; margin-inline: auto; } }
.brand-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px 24px; transition: transform .2s, border-color .2s; }
.brand-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--teal) 40%, var(--line)); }
.brand-logo-box {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 64px;
  margin-bottom: 14px;
  padding: 0;
}
.brand-logo { display: block; width: auto; height: auto; max-width: 168px; max-height: 42px; object-fit: contain; }
.brand-logo.logo-gogetssl { max-width: 160px; max-height: 50px; }
.brand-logo.logo-rapidssl { max-width: 160px; max-height: 38px; }
.brand-tier { font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.brand-types { display: flex; flex-wrap: wrap; gap: 6px; }
.brand-types span { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 20px; background: color-mix(in srgb, var(--teal) 10%, transparent); color: var(--teal); }

/* ===== 발급 스텝 ===== */
.issue-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 8px; }
@media (max-width: 900px) { .issue-flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .issue-flow { grid-template-columns: 1fr; } }
.issue-step { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px 20px; text-align: center; position: relative; }
.issue-n { font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 700; color: var(--teal); margin-bottom: 10px; }
.issue-ic { width: 44px; height: 44px; margin: 0 auto 12px; border-radius: 12px; display: grid; place-items: center; font-size: 19px; background: color-mix(in srgb, var(--teal) 14%, transparent); color: var(--teal); }
.issue-step h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 5px; }
.issue-step p { font-size: 13px; color: var(--text-3); line-height: 1.55; }

/* ===== guard 연계 배너 ===== */
.link-guard { background: linear-gradient(135deg, color-mix(in srgb, var(--amber) 8%, var(--panel)), color-mix(in srgb, var(--teal) 6%, var(--panel))); border: 1px solid var(--line); border-radius: 20px; padding: 34px 36px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 8px; }
.link-guard .lg-txt { flex: 1; min-width: 260px; }
.link-guard h3 { font-size: 21px; font-weight: 800; margin-bottom: 7px; }
.link-guard p { font-size: 14.5px; color: var(--text-2); line-height: 1.6; }
.link-guard .btn-guard { background: linear-gradient(135deg, var(--amber), var(--amber-2)); color: #1b2030; box-shadow: 0 12px 28px -10px var(--amber); }
.link-guard .btn-guard:hover { box-shadow: 0 16px 34px -10px var(--amber); }

/* cta band — 버튼 없음, 위 섹션과 간격 확보 */
.cta-band { margin: 90px 28px 0; }
.cta-inner { max-width: 1200px; margin: 0 auto; background: linear-gradient(135deg, var(--panel-2), var(--panel)); border: 1px solid var(--line); border-radius: 28px; padding: 64px 40px; text-align: center; position: relative; overflow: hidden; box-shadow: var(--shadow); }
.cta-inner h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -.03em; margin-bottom: 16px; position: relative; }
.cta-inner p { font-size: 18px; color: var(--text-2); margin-bottom: 0; position: relative; }

/* ===== footer (www/guard 준용) ===== */
footer { padding: 60px 0 40px; border-top: 1px solid var(--line); margin-top: 90px; }
.foot-in { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
.foot-brand { max-width: 300px; }
.foot-brand p { font-size: 14px; color: var(--text-3); margin-top: 14px; line-height: 1.6; }
.foot-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.foot-col h5 { font-size: 13px; font-weight: 700; margin-bottom: 14px; letter-spacing: .04em; }
.foot-col a { display: block; color: var(--text-3); text-decoration: none; font-size: 14px; padding: 5px 0; transition: color .2s; }
.foot-col a:hover { color: var(--teal); }

.foot-biz { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line-soft); font-size: 13px; color: var(--text-3); }
.foot-biz strong { display: block; margin-bottom: 8px; color: var(--text-2); font-size: 13.5px; font-weight: 800; }
.foot-biz p { margin: 0; line-height: 1.9; }
.foot-biz .sep { display: inline-block; width: 1px; height: 10px; margin: 0 10px; vertical-align: -1px; background: var(--line); }
.foot-biz a { color: var(--text-2); text-decoration: underline; text-underline-offset: 2px; }

.foot-btm { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line-soft); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; font-size: 13px; color: var(--text-3); }
.foot-tools { display: flex; align-items: center; gap: 12px; }
.lang-switch { display: inline-flex; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.lang-switch button { min-width: 40px; padding: 6px 10px; border: 0; border-radius: 7px; background: transparent; color: var(--text-3); font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 700; cursor: pointer; transition: background .15s, color .15s; }
.lang-switch button.active { background: var(--text); color: var(--bg); }
.theme-btn {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 36px; padding: 6px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel); color: var(--text-2);
  font-size: 13px; font-weight: 700; cursor: pointer;
  transition: color .2s, border-color .2s;
}
.theme-btn:hover { color: var(--teal); border-color: var(--teal); }
.theme-btn .t-ic { font-size: 15px; line-height: 1; }

/* reveal anim */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.show { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}