/* 铠守扶光官网 v2 · 深海军蓝 × 亮蓝（与业务简介封面同调） */
:root {
  --bg: #0b1626;
  --bg-2: #0e1c30;
  --card: #122741;
  --card-2: #16304f;
  --line: rgba(126, 168, 224, 0.16);
  --accent: #1e90ff;
  --accent-2: #55b2ff;
  --text: #eaf2fb;
  --muted: #9db1c9;
  --radius: 14px;
  --radius-l: 20px;
  --max: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(30, 144, 255, 0.45); color: #fff; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #23405f; border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2f5580; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ── 眉题（节标签） ── */
.eyebrow {
  display: table; margin: 0 auto 16px;
  font-size: 12px; letter-spacing: 5px; color: var(--accent-2);
  border: 1px solid rgba(85, 178, 255, 0.35); border-radius: 999px;
  padding: 4px 16px 4px 21px; text-transform: uppercase;
}
.eyebrow-left { margin: 0 0 16px; display: inline-block; }

/* ── 导航 ── */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(11, 22, 38, 0.78);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(11, 22, 38, 0.92); }
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 66px; display: flex; align-items: center; justify-content: space-between;
}
.brand { font-size: 20px; font-weight: 700; letter-spacing: 2px; display: flex; align-items: baseline; gap: 10px; }
.brand-en { font-size: 10px; letter-spacing: 3px; color: var(--muted); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.nav-links a { position: relative; color: var(--muted); transition: color 0.2s; padding: 6px 0; }
.nav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 50%; bottom: -2px;
  width: 0; height: 2px; border-radius: 2px; background: var(--accent-2);
  transform: translateX(-50%); transition: width 0.25s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent-2); }
.nav-links a.active::after { width: 100%; }
.nav-cta {
  color: #fff !important;
  background: var(--accent);
  padding: 8px 18px; border-radius: 999px; font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--accent-2); }
.nav-cta:active { transform: scale(0.96); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s; }

/* ── 首屏 ── */
.hero {
  position: relative; overflow: hidden;
  min-height: 92vh; display: flex; flex-direction: column; justify-content: center;
  padding: 150px 0 90px; text-align: center;
}
.hero-glow {
  position: absolute; inset: -10%; pointer-events: none;
  background:
    radial-gradient(620px 400px at 50% 10%, rgba(30, 144, 255, 0.22), transparent 70%),
    radial-gradient(900px 520px at 85% 90%, rgba(30, 144, 255, 0.09), transparent 70%),
    radial-gradient(700px 420px at 8% 85%, rgba(85, 178, 255, 0.08), transparent 70%);
  animation: glow-drift 14s ease-in-out infinite alternate;
}
@keyframes glow-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(0, -2.5%, 0) scale(1.06); }
}
.hero-dots {
  position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(159, 199, 240, 0.10) 1px, transparent 1px);
  background-size: 30px 30px;
  -webkit-mask-image: radial-gradient(720px 480px at 50% 32%, #000 30%, transparent 75%);
  mask-image: radial-gradient(720px 480px at 50% 32%, #000 30%, transparent 75%);
}
.hero .wrap { position: relative; }
.hero-kicker {
  display: table; margin: 0 auto 26px;
  font-size: 13.5px; letter-spacing: 3px; color: var(--accent-2);
  border: 1px solid rgba(85, 178, 255, 0.4); border-radius: 999px;
  padding: 6px 20px; background: rgba(30, 144, 255, 0.08);
}
.hero h1 { font-size: clamp(40px, 6.8vw, 78px); line-height: 1.18; letter-spacing: 4px; font-weight: 800; }
.grad {
  background: linear-gradient(92deg, #2f9bff, #74c6ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-slogan { margin-top: 26px; color: var(--muted); font-size: clamp(14px, 2vw, 18px); letter-spacing: 2px; }
.hero-sub { max-width: 760px; margin: 18px auto 0; color: var(--muted); font-size: 16px; }
.hero-sub strong { color: var(--text); }
.hero-actions { margin-top: 40px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-trust { margin-top: 44px; color: var(--muted); font-size: 13.5px; letter-spacing: 1px; }
.hero-trust em { font-style: normal; color: var(--text); margin-left: 12px; letter-spacing: 2px; }
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  width: 26px; height: 42px; border: 1.5px solid rgba(159, 199, 240, 0.45); border-radius: 999px;
}
.hero-scroll span {
  position: absolute; left: 50%; top: 8px; width: 4px; height: 9px; border-radius: 4px;
  background: var(--accent-2); transform: translateX(-50%);
  animation: scroll-hint 1.8s ease-in-out infinite;
}
@keyframes scroll-hint {
  0%, 100% { transform: translate(-50%, 0); opacity: 1; }
  55% { transform: translate(-50%, 12px); opacity: 0.15; }
}

.btn {
  display: inline-block; padding: 13px 30px; border-radius: 999px;
  font-size: 16px; font-weight: 600; transition: transform 0.15s, background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 28px rgba(30, 144, 255, 0.35); }
.btn-primary:hover { background: var(--accent-2); box-shadow: 0 10px 34px rgba(30, 144, 255, 0.45); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-2); }

/* ── 信任条 ── */
.strip { padding: 72px 0 64px; background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.strip-title { text-align: center; font-size: clamp(19px, 2.6vw, 25px); font-weight: 700; }
.strip-sub { text-align: center; color: var(--muted); margin-top: 8px; font-size: 14.5px; }
.strip-grid { margin-top: 38px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.strip-col { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.strip-col h3 { font-size: 14px; color: var(--accent-2); letter-spacing: 2px; margin-bottom: 12px; }
.strip-col ul { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; }
.strip-col li {
  font-size: 13.5px; color: var(--text); text-align: center;
  background: rgba(30, 144, 255, 0.06); border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 4px; transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.strip-col li:hover { border-color: rgba(85, 178, 255, 0.55); color: var(--accent-2); background: rgba(30, 144, 255, 0.12); }

/* ── 通用节 ── */
section { padding: 96px 0; }
.sec-title { text-align: center; font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: 2px; }
.sec-sub { text-align: center; color: var(--muted); margin-top: 12px; font-size: 15.5px; }

/* ── 成果数字 ── */
.stats { background: var(--bg); }
.stats-grid { margin-top: 52px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stat {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 28px; text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}
.stat:hover { transform: translateY(-4px); border-color: rgba(85, 178, 255, 0.45); }
.stat-hot {
  border-color: rgba(30, 144, 255, 0.55);
  background: linear-gradient(180deg, rgba(30, 144, 255, 0.14), var(--card) 60%);
  box-shadow: 0 14px 44px rgba(30, 144, 255, 0.14);
}
.stat-num {
  font-size: clamp(34px, 4.4vw, 52px); font-weight: 800; letter-spacing: 1px;
  background: linear-gradient(92deg, #2f9bff, #74c6ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-num i { font-style: normal; color: var(--muted); font-size: 0.62em; margin: 0 6px; -webkit-text-fill-color: var(--muted); }
.stat-label { margin-top: 12px; color: var(--muted); font-size: 14.5px; }

/* ── 定位 ── */
.position { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pos-grid { margin-top: 52px; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 20px; }
.pos-what { display: grid; gap: 16px; align-content: start; }
.pos-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; transition: transform 0.2s, border-color 0.2s; }
.pos-card:hover { transform: translateX(4px); border-color: rgba(85, 178, 255, 0.5); }
.pos-card h3 { font-size: 20px; display: inline-block; border-bottom: 3px solid var(--accent); padding-bottom: 4px; }
.pos-tag { color: var(--accent-2); font-size: 14px; margin: 8px 0 6px; }
.pos-card p:last-child { color: var(--muted); font-size: 14.5px; }
.pos-identity { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; }
.pos-id-title { color: var(--accent-2); font-size: 16px; letter-spacing: 3px; margin-bottom: 14px; }
.pos-identity ul { list-style: none; display: grid; gap: 14px; }
.pos-identity li { border-left: 3px solid var(--accent); padding-left: 14px; font-size: 14.8px; }
.pos-identity strong { display: block; }
.pos-identity span { color: var(--muted); font-size: 13.5px; }

/* ── 方法论 ── */
.model { margin-top: 52px; }
.model-line { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.model-box {
  background: linear-gradient(180deg, rgba(30, 144, 255, 0.14), rgba(30, 144, 255, 0.05));
  border: 1px solid rgba(30, 144, 255, 0.35); border-radius: var(--radius);
  padding: 26px 24px; text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.model-box:hover { transform: translateY(-4px); box-shadow: 0 14px 40px rgba(30, 144, 255, 0.16); }
.model-kicker { display: block; color: var(--accent-2); font-size: 13.5px; letter-spacing: 3px; margin-bottom: 8px; }
.model-box strong { font-size: 19px; }
.model-box p { color: var(--muted); font-size: 13.8px; margin-top: 8px; }
.method-cols { margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.mcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; }
.mcard h3 { font-size: 18px; margin-bottom: 12px; }
.mcard p { color: var(--muted); font-size: 14.2px; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.tags li {
  font-size: 12.8px; color: var(--accent-2);
  border: 1px solid rgba(85, 178, 255, 0.4); border-radius: 999px; padding: 3px 12px;
}
.flow { margin-top: 46px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; }
.flow-title { text-align: center; font-size: 18px; margin-bottom: 22px; letter-spacing: 2px; }
.flow-steps { list-style: none; display: grid; grid-template-columns: repeat(8, 1fr); gap: 10px; }
.flow-steps li {
  text-align: center; font-size: 14px; font-weight: 600;
  background: var(--card-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 6px; position: relative; transition: border-color 0.2s, transform 0.2s;
}
.flow-steps li:hover { border-color: rgba(85, 178, 255, 0.55); transform: translateY(-3px); }
.flow-steps li i { display: block; font-style: normal; color: var(--accent-2); font-size: 12px; letter-spacing: 1px; margin-bottom: 4px; }
.flow-steps li em { display: block; font-style: normal; font-weight: 400; color: var(--muted); font-size: 12px; margin-top: 4px; }

/* ── 创始人 ── */
.team { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.team-grid { margin-top: 52px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.founder { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 30px; }
.f-head { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; }
.f-avatar {
  width: 64px; height: 64px; flex: none; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 800; color: #fff;
}
.f-avatar-a { background: linear-gradient(135deg, var(--accent), #0f5cb0); box-shadow: 0 8px 24px rgba(30, 144, 255, 0.3); }
.f-avatar-b { background: linear-gradient(135deg, #3fd0c9, #1479a8); box-shadow: 0 8px 24px rgba(63, 208, 201, 0.22); }
.founder h3 { font-size: 22px; }
.f-en { color: var(--muted); font-size: 15px; font-weight: 400; margin-left: 6px; }
.f-role { color: var(--accent-2); font-size: 14px; }
.founder p { color: var(--muted); font-size: 14.5px; margin-top: 10px; }
.founder p strong { color: var(--text); }
.f-tags, .f-cases { border-top: 1px dashed var(--line); padding-top: 10px; }

/* ── 案例 ── */
.case-filter { margin-top: 34px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.f-btn {
  font-family: inherit; font-size: 14px; cursor: pointer;
  color: var(--muted); background: var(--card);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 20px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.f-btn:hover { color: var(--text); border-color: rgba(85, 178, 255, 0.5); }
.f-btn.active { color: #fff; background: var(--accent); border-color: var(--accent); font-weight: 600; }
.case-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.case {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 24px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.case:hover { transform: translateY(-5px); border-color: rgba(85, 178, 255, 0.5); box-shadow: 0 16px 40px rgba(2, 10, 24, 0.5); }
.case.hidden { display: none; }
.case.pop { animation: case-in 0.45s ease both; }
@keyframes case-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
.case-ind {
  display: inline-block; font-size: 12px; color: var(--accent-2);
  border: 1px solid rgba(85, 178, 255, 0.4); border-radius: 999px; padding: 2px 12px; margin-bottom: 12px;
}
.case h3 { font-size: 20px; }
.case-proj { color: var(--text); font-size: 14px; margin-top: 4px; }
.case-fact { color: var(--muted); font-size: 13.8px; margin: 10px 0 14px; }
.case-fact b { color: var(--accent-2); font-size: 1.12em; }
.case .tags { margin-bottom: 0; }

/* ── 服务 ── */
.services { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.svc-grid { margin-top: 52px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.svc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px; display: flex; flex-direction: column; transition: transform 0.2s, border-color 0.2s; }
.svc:hover { transform: translateY(-4px); border-color: rgba(85, 178, 255, 0.45); }
.svc-hot { border-color: rgba(30, 144, 255, 0.55); background: linear-gradient(180deg, rgba(30, 144, 255, 0.12), var(--card) 55%); }
.svc-no { color: var(--accent); font-size: 13px; font-weight: 800; letter-spacing: 2px; }
.svc h3 { font-size: 20px; margin-top: 6px; }
.svc-cycle { color: var(--accent-2); font-size: 13.5px; margin: 4px 0 10px; }
.svc p:not(.svc-cycle):not(.svc-fit) { color: var(--muted); font-size: 14.2px; }
.svc-fit { margin-top: auto; padding-top: 14px; font-size: 13.2px; color: var(--text); }
.svc-fit::before { content: "◎ "; color: var(--accent); }
.svc-next {
  justify-content: center; text-align: center; align-items: center; gap: 6px;
  border-style: dashed; border-color: rgba(85, 178, 255, 0.5);
  background: rgba(30, 144, 255, 0.05);
}
.svc-next:hover { border-style: solid; background: rgba(30, 144, 255, 0.1); }
.svc-next h3 { margin-top: 0; }
.svc-next p { color: var(--muted); font-size: 14px; padding-bottom: 14px; }
.svc-note { text-align: center; color: var(--muted); font-size: 14.5px; margin-top: 34px; }

/* ── 联系 ── */
.contact { position: relative; overflow: hidden; }
.contact::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(560px 360px at 72% 50%, rgba(30, 144, 255, 0.16), transparent 70%);
}
.contact-wrap { position: relative; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: center; }
.contact h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: 2px; }
.contact-lead { color: var(--muted); margin-top: 14px; font-size: 16.5px; }
.contact-words { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; }
.contact-words span {
  border: 1px solid rgba(85, 178, 255, 0.45); color: var(--accent-2);
  border-radius: 999px; padding: 6px 20px; font-size: 15px; letter-spacing: 2px;
  transition: background 0.2s, color 0.2s;
}
.contact-words span:hover { background: var(--accent); color: #fff; }
.contact-principle { margin-top: 30px; font-size: 19px; letter-spacing: 4px; color: var(--text); }
.contact-principle small { color: var(--muted); font-size: 13.5px; letter-spacing: 2px; }
.qr-card {
  background: #fff; border-radius: 18px; padding: 18px; max-width: 320px; margin: 0 auto;
  box-shadow: 0 18px 60px rgba(30, 144, 255, 0.25);
  transition: transform 0.25s, box-shadow 0.25s;
}
.qr-card:hover { transform: translateY(-5px) scale(1.02); box-shadow: 0 24px 72px rgba(30, 144, 255, 0.35); }
.qr-card img { border-radius: 8px; }
.qr-card p { text-align: center; color: #16273e; font-weight: 700; font-size: 15px; padding-top: 12px; letter-spacing: 1px; }

/* ── 页脚 ── */
.footer { border-top: 1px solid var(--line); padding: 44px 0 46px; text-align: center; }
.footer-brand { font-weight: 700; letter-spacing: 3px; }
.footer-slogan { color: var(--accent-2); font-size: 13.5px; letter-spacing: 4px; margin-top: 8px; }
.footer-nav { margin-top: 18px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 22px; font-size: 14px; }
.footer-nav a { color: var(--muted); transition: color 0.2s; }
.footer-nav a:hover { color: var(--accent-2); }
.footer-name { color: var(--muted); font-size: 14px; margin-top: 18px; }
.footer-name span { font-size: 12.5px; letter-spacing: 0.5px; }
.footer-copy { color: var(--muted); font-size: 12.5px; margin-top: 14px; }

/* ── 返回顶部 ── */
.btt {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--card-2); color: var(--accent-2);
  border: 1px solid rgba(85, 178, 255, 0.4); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(14px); pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, background 0.2s;
}
.btt.show { opacity: 1; transform: none; pointer-events: auto; }
.btt:hover { background: var(--accent); color: #fff; }

/* ── 入场动效 ── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-glow, .hero-scroll span { animation: none; }
  .case.pop { animation: none; }
}

/* ── 响应式 ── */
@media (max-width: 960px) {
  .strip-grid, .pos-grid, .team-grid { grid-template-columns: 1fr; }
  .stats-grid, .model-line, .method-cols { grid-template-columns: 1fr; }
  .case-grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: repeat(4, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .hero { min-height: 0; }
}
@media (max-width: 640px) {
  section { padding: 68px 0; }
  .hero { padding: 128px 0 76px; }
  .case-grid, .svc-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .strip-col ul { grid-template-columns: 1fr 1fr; }
  .hero-trust em { display: block; margin: 6px 0 0; }
  .hero-scroll { display: none; }
  .nav-links {
    position: fixed; top: 66px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(11, 22, 38, 0.97);
    border-bottom: 1px solid var(--line);
    display: none; padding: 8px 24px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-links a:not(.nav-cta)::after { display: none; }
  .nav-links a:last-child { border-bottom: 0; margin-top: 8px; text-align: center; }
  .nav-toggle { display: block; }
  .btt { right: 14px; bottom: 14px; }
}