/* =============================================================
   MOUTSAN · Electric Toilet Bubble Machine
   BaDouCMS Theme Stylesheet  (moutsan-cn / moutsan-en shared)
   Design: light / water-fresh / premium
   ============================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#08161F;
  --ink-2:#46586A;
  --ink-3:#7E8D9B;
  --aqua:#0FB3C4;
  --aqua-d:#0A8B99;
  --aqua-l:#D9F4F8;
  --mint:#5FDDC6;
  --bg:#F6FAFB;
  --bg-2:#EDF5F7;
  --surface:#FFFFFF;
  --line:#E1EDF0;
  --line-2:#D2E4E8;
  --ok:#0EA47A;
  --dark:#061A24;
  --dark-2:#0A2632;

  --r-s:12px; --r-m:20px; --r-l:28px; --r-xl:40px; --r-pill:999px;

  --sh-1:0 1px 2px rgba(8,22,31,.04), 0 4px 14px rgba(8,22,31,.05);
  --sh-2:0 2px 6px rgba(8,22,31,.05), 0 14px 38px rgba(8,22,31,.07);
  --sh-3:0 6px 18px rgba(8,22,31,.06), 0 30px 70px rgba(8,22,31,.10);
  --sh-aqua:0 10px 30px rgba(15,179,196,.28);

  --f:"Inter","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --wrap:1200px;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{
  margin:0;font-family:var(--f);color:var(--ink);background:var(--bg);
  line-height:1.7;font-size:16px;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--aqua);color:#fff}

/* ---------- 2. Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sec{padding:110px 0;position:relative}
.sec--tight{padding:80px 0}
.sec--bg{background:var(--surface)}
.sec--soft{background:linear-gradient(180deg,#F6FAFB 0%,#EDF5F7 100%)}
.sec--dark{background:var(--dark);color:#fff}
.sec--dark .h2,.sec--dark .lead{color:#fff}

/* ---------- 3. Type ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--aqua-d);background:var(--aqua-l);
  padding:8px 16px;border-radius:var(--r-pill);margin-bottom:22px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua);box-shadow:0 0 0 4px rgba(15,179,196,.16)}
.eyebrow--light{color:#9DEBF4;background:rgba(15,179,196,.14)}
.eyebrow--light::before{background:var(--mint)}

.h1{font-size:clamp(38px,5.2vw,66px);line-height:1.08;font-weight:800;letter-spacing:-.03em}
.h2{font-size:clamp(28px,3.4vw,44px);line-height:1.18;font-weight:800;letter-spacing:-.025em}
.h3{font-size:clamp(19px,1.6vw,22px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.h4{font-size:16.5px;font-weight:700;line-height:1.4}
.lead{font-size:clamp(15.5px,1.15vw,17.5px);color:var(--ink-2);line-height:1.85;font-weight:400}
.muted{color:var(--ink-3)}
.grad{
  background:linear-gradient(100deg,var(--aqua) 0%,var(--mint) 55%,#7FD8FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sec--dark .grad{background:linear-gradient(100deg,#6FE7F5 0%,var(--mint) 60%,#9BE9FF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

.sec-head{max-width:720px;margin-bottom:58px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .lead{margin-top:16px}

/* ---------- 4. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 31px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15.5px;font-weight:650;letter-spacing:.01em;white-space:nowrap;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease);
}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary{background:linear-gradient(135deg,var(--aqua) 0%,var(--aqua-d) 100%);color:#fff;box-shadow:var(--sh-aqua)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(15,179,196,.36)}
.btn-ghost{background:rgba(255,255,255,.72);color:var(--ink);border-color:var(--line-2);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(6,26,36,.3)}
.btn-white{background:#fff;color:var(--dark)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,.25)}
.btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-lg{padding:18px 40px;font-size:16.5px}
.btn-group{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 5. Nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:900;height:var(--nav-h);
  background:rgba(246,250,251,.82);backdrop-filter:saturate(180%) blur(18px);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid transparent;transition:.35s var(--ease);
}
.nav.is-stuck{background:rgba(255,255,255,.9);border-bottom-color:var(--line);box-shadow:0 6px 26px rgba(8,22,31,.05)}
.nav-in{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(140deg,var(--aqua),var(--mint));display:grid;place-items:center;box-shadow:0 6px 16px rgba(15,179,196,.32)}
.brand-mark svg{width:21px;height:21px}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-size:17px;font-weight:800;letter-spacing:.06em}
.brand-txt i{font-size:10.5px;font-style:normal;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--aqua-d)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 15px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:550;color:var(--ink-2);transition:.28s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:2px;border-radius:2px;
  background:var(--aqua);transform:translateX(-50%);transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(15,179,196,.07)}
.nav-links a.is-active{color:var(--aqua-d);font-weight:700}
.nav-links a.is-active::after{width:14px}
.nav-right{display:flex;align-items:center;gap:14px;flex:none}

/* lang switch */
.lang{display:flex;align-items:center;gap:2px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px}
.lang a{padding:6px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:650;color:var(--ink-3);letter-spacing:.04em;transition:.28s var(--ease);white-space:nowrap}
.lang a:hover{color:var(--ink)}
.lang a.is-active{background:var(--surface);color:var(--aqua-d);box-shadow:var(--sh-1)}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--surface);border-radius:12px;position:relative}
.burger span{position:absolute;left:12px;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:.3s var(--ease)}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.burger.is-open span:nth-child(1){top:21px;transform:rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){top:21px;transform:rotate(-45deg)}

.drawer{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:899;background:rgba(255,255,255,.97);
  backdrop-filter:blur(18px);border-bottom:1px solid var(--line);
  padding:16px 24px 26px;display:none;flex-direction:column;gap:2px;
  transform:translateY(-8px);opacity:0;transition:.3s var(--ease);pointer-events:none;
}
.drawer.is-open{transform:none;opacity:1;pointer-events:auto}
.drawer a{padding:14px 16px;border-radius:14px;font-size:16px;font-weight:600;color:var(--ink);transition:.2s}
.drawer a:hover,.drawer a.is-active{background:var(--aqua-l);color:var(--aqua-d)}
.drawer .lang{margin-top:14px;align-self:flex-start}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;padding:calc(var(--nav-h) + 76px) 0 96px;overflow:hidden;
  background:
    radial-gradient(1100px 620px at 78% -8%,rgba(15,179,196,.16) 0%,transparent 62%),
    radial-gradient(760px 520px at 6% 88%,rgba(95,221,198,.16) 0%,transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(8,22,31,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(8,22,31,.035) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:8px 17px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.85);border:1px solid var(--line-2);box-shadow:var(--sh-1);
  font-size:13px;font-weight:650;color:var(--ink-2);margin-bottom:26px;
}
.hero-badge b{color:var(--aqua-d)}
.hero h1{margin-bottom:22px}
.hero .lead{max-width:560px;margin-bottom:36px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-trust{display:flex;gap:30px;flex-wrap:wrap;padding-top:28px;border-top:1px solid var(--line)}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--ink-2)}
.hero-trust svg{width:17px;height:17px;color:var(--aqua);flex:none}

.hero-art{position:relative}
.hero-stage{
  position:relative;border-radius:var(--r-xl);padding:34px;
  background:linear-gradient(150deg,#FFFFFF 0%,#F2FAFC 100%);
  border:1px solid var(--line);box-shadow:var(--sh-3);
}
.hero-stage::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);pointer-events:none;
  background:radial-gradient(420px 260px at 72% 6%,rgba(15,179,196,.14),transparent 70%);
}
.hero-art svg.art{width:100%;height:auto;display:block;position:relative;z-index:1}
.chip{
  position:absolute;z-index:3;display:flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:14px;
  padding:10px 15px;box-shadow:var(--sh-2);backdrop-filter:blur(8px);
  animation:float 5.5s ease-in-out infinite;
}
.chip b{font-size:15px;font-weight:800;color:var(--ink);line-height:1.1}
.chip s{display:block;font-size:11px;color:var(--ink-3);text-decoration:none;font-weight:600;letter-spacing:.02em}
.chip-ico{width:30px;height:30px;border-radius:9px;background:var(--aqua-l);display:grid;place-items:center;flex:none}
.chip-ico svg{width:16px;height:16px;color:var(--aqua-d)}
.chip--1{top:22px;left:-22px}
.chip--2{bottom:74px;right:-26px;animation-delay:1.4s}
.chip--3{bottom:-16px;left:8%;animation-delay:2.6s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- 7. Stat band ---------- */
.stats{background:var(--dark);color:#fff;padding:0}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.08)}
.stat{padding:46px 30px;text-align:center;position:relative;background:var(--dark)}
.stat b{display:block;font-size:clamp(32px,3.6vw,46px);font-weight:800;letter-spacing:-.03em;line-height:1.05;
  background:linear-gradient(120deg,#7FE9F6,var(--mint));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;margin-top:10px;font-size:13.5px;color:rgba(255,255,255,.62);font-weight:550;letter-spacing:.02em}

/* ---------- 8. Cards ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

.card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:34px 30px;overflow:hidden;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-m);opacity:0;transition:opacity .4s var(--ease);
  background:radial-gradient(320px 180px at 82% -10%,rgba(15,179,196,.10),transparent 70%);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.card:hover::before{opacity:1}
.card>*{position:relative;z-index:1}
.card h3{margin-bottom:11px}
.card p{font-size:14.8px;color:var(--ink-2);line-height:1.8}

.ico{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;margin-bottom:22px;
  background:linear-gradient(140deg,var(--aqua-l),#F0FBFD);border:1px solid rgba(15,179,196,.16);
  transition:transform .4s var(--ease);
}
.ico svg{width:25px;height:25px;color:var(--aqua-d)}
.card:hover .ico{transform:scale(1.07) rotate(-4deg)}
.ico--dark{background:rgba(15,179,196,.15);border-color:rgba(95,221,198,.24)}
.ico--dark svg{color:var(--mint)}

/* numbered card */
.card-num{
  position:absolute;top:22px;right:26px;font-size:44px;font-weight:800;line-height:1;
  color:rgba(8,22,31,.05);letter-spacing:-.04em;z-index:0;
}

/* ---------- 9. Compare ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.panel-head{padding:22px 28px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.panel-head .tag{font-size:12px;font-weight:700;letter-spacing:.08em;padding:5px 12px;border-radius:var(--r-pill)}
.tag--no{background:#FDECEC;color:#C0392B}
.tag--yes{background:#E6F7F1;color:var(--ok)}
.panel-body{padding:26px 28px}
.panel-body p{font-size:14.8px;color:var(--ink-2)}
.visual{border-radius:var(--r-s);background:linear-gradient(160deg,var(--bg-2),#F8FCFD);padding:18px;margin-bottom:22px;border:1px solid var(--line)}
.visual svg{width:100%;height:auto}

.mark-list{display:grid;gap:13px}
.mark-list li{display:flex;gap:11px;font-size:14.8px;color:var(--ink-2);line-height:1.65}
.mark-list svg{width:19px;height:19px;flex:none;margin-top:3px}
.mk-no{color:#D6604F}
.mk-yes{color:var(--ok)}

/* before/after rows */
.ba{display:grid;gap:12px}
.ba-row{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-s);padding:18px 24px;
  transition:.35s var(--ease);
}
.ba-row:hover{box-shadow:var(--sh-1);border-color:var(--line-2)}
.ba-before{font-size:14.6px;color:var(--ink-3);text-decoration:line-through;text-decoration-color:rgba(214,96,79,.55);text-decoration-thickness:1.5px}
.ba-arrow{width:30px;height:30px;border-radius:50%;background:var(--aqua-l);display:grid;place-items:center;flex:none}
.ba-arrow svg{width:15px;height:15px;color:var(--aqua-d)}
.ba-after{font-size:14.6px;font-weight:650;color:var(--ink)}

/* vs table */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface)}
table.vs{width:100%;border-collapse:collapse;min-width:660px}
table.vs th,table.vs td{padding:17px 22px;text-align:left;font-size:14.6px;border-bottom:1px solid var(--line)}
table.vs thead th{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);background:var(--bg);white-space:nowrap}
table.vs tbody tr:last-child td{border-bottom:0}
table.vs td:first-child{font-weight:650;color:var(--ink);background:var(--bg)}
table.vs td{color:var(--ink-2)}
table.vs .col-ours{background:rgba(15,179,196,.06);color:var(--aqua-d);font-weight:700}
table.vs thead .col-ours{background:var(--aqua-l);color:var(--aqua-d)}
table.vs tbody tr:hover td{background:rgba(15,179,196,.035)}
table.vs tbody tr:hover td:first-child{background:var(--bg-2)}
table.vs tbody tr:hover .col-ours{background:rgba(15,179,196,.1)}

/* ---------- 10. Tech bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.bt{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:36px;position:relative;overflow:hidden}
.bt--7{grid-column:span 7}
.bt--5{grid-column:span 5}
.bt--6{grid-column:span 6}
.bt--12{grid-column:span 12}
.bt h3{margin-bottom:12px}
.bt p{font-size:14.8px;color:var(--ink-2)}
.bt-diagram{background:linear-gradient(160deg,#F1FAFC,#FFFFFF);border-radius:var(--r-s);border:1px solid var(--line);padding:22px;margin-top:26px}
.bt-diagram svg{width:100%;height:auto;display:block}
.diag-legend{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px}
.diag-legend span{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink-2)}
.dot{width:10px;height:10px;border-radius:3px;flex:none}

/* ---------- 11. Spec table ---------- */
.spec-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:center}
.spec-draw{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:34px;box-shadow:var(--sh-1)}
.spec-draw svg{width:100%;height:auto;display:block}
table.spec{width:100%;border-collapse:collapse}
table.spec tr{border-bottom:1px solid var(--line)}
table.spec tr:last-child{border-bottom:0}
table.spec th{
  text-align:left;padding:17px 0;font-size:14.4px;font-weight:550;color:var(--ink-3);width:44%;
  vertical-align:top;
}
table.spec td{padding:17px 0;font-size:15.2px;font-weight:650;color:var(--ink);text-align:right}
table.spec td em{font-style:normal;font-weight:600;color:var(--ink-3);font-size:13.5px;display:block;margin-top:2px}

/* ---------- 12. Steps ---------- */
.steps{position:relative;display:grid;gap:0}
.steps::before{content:"";position:absolute;left:29px;top:26px;bottom:26px;width:2px;background:linear-gradient(180deg,var(--aqua),var(--aqua-l));border-radius:2px}
.step{position:relative;display:grid;grid-template-columns:60px 1fr;gap:26px;padding:26px 0}
.step-n{
  width:60px;height:60px;border-radius:50%;display:grid;place-items:center;flex:none;position:relative;z-index:1;
  background:var(--surface);border:2px solid var(--aqua);color:var(--aqua-d);font-weight:800;font-size:19px;
  box-shadow:0 0 0 8px var(--bg);
}
.step-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:28px 30px}
.step-body h3{margin-bottom:18px}
.step ul{display:grid;gap:11px}
.step ul li{display:flex;gap:11px;font-size:14.8px;color:var(--ink-2);line-height:1.65}
.step ul svg{width:18px;height:18px;flex:none;margin-top:3px;color:var(--aqua)}

/* ---------- 13. CTA ---------- */
.cta{padding:0 0 0}
.cta-in{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:76px 60px;text-align:center;
  background:linear-gradient(135deg,#061A24 0%,#0B3A48 55%,#0A5763 100%);color:#fff;
  box-shadow:var(--sh-3);
}
.cta-in::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 380px at 50% -10%,rgba(15,179,196,.32),transparent 68%),
             radial-gradient(520px 320px at 88% 108%,rgba(95,221,198,.22),transparent 70%);
}
.cta-in>*{position:relative;z-index:1}
.cta-in .h2{margin-bottom:16px}
.cta-in p{color:rgba(255,255,255,.72);font-size:16.5px;max-width:640px;margin:0 auto 34px}
.cta-notes{display:flex;gap:26px;flex-wrap:wrap;justify-content:center;margin-top:28px;font-size:13.5px;color:rgba(255,255,255,.6)}
.cta-notes span{display:flex;align-items:center;gap:8px}
.cta-notes svg{width:15px;height:15px;color:var(--mint)}

/* ---------- 14. Page hero (inner pages) ---------- */
.phero{
  padding:calc(var(--nav-h) + 66px) 0 62px;text-align:center;position:relative;overflow:hidden;
  background:radial-gradient(900px 480px at 50% -20%,rgba(15,179,196,.16),transparent 66%),linear-gradient(180deg,#fff,var(--bg));
}
.phero .h1{font-size:clamp(30px,3.8vw,48px);margin-bottom:16px}
.crumb{display:flex;justify-content:center;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-top:22px;flex-wrap:wrap}
.crumb a:hover{color:var(--aqua-d)}
.crumb i{font-style:normal;opacity:.5}

/* ---------- 15. Product list ---------- */
.plist{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.pcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.pcard-img{position:relative;aspect-ratio:4/3;background:linear-gradient(160deg,#F1FAFC,#E7F4F7);overflow:hidden;display:grid;place-items:center}
.pcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.pcard:hover .pcard-img img{transform:scale(1.05)}
.pcard-img .ph{width:66%;opacity:.75}
.pcard-body{padding:26px 26px 30px;display:flex;flex-direction:column;flex:1}
.pcard-body .h4{margin-bottom:9px}
.pcard-body p{font-size:14.4px;color:var(--ink-2);flex:1;margin-bottom:20px}
.pcard-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--aqua-d)}
.pcard-more svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.pcard:hover .pcard-more svg{transform:translateX(4px)}

/* ---------- 16. Article / detail ---------- */
.article{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:52px 56px;box-shadow:var(--sh-1)}
.article h1{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.025em;line-height:1.25;margin-bottom:18px}
.article-meta{display:flex;gap:22px;flex-wrap:wrap;padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:32px;font-size:13.5px;color:var(--ink-3)}
.article-meta span{display:flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px}
.article-body{font-size:16.2px;line-height:1.95;color:var(--ink-2)}
.article-body h2{font-size:23px;font-weight:750;color:var(--ink);margin:38px 0 14px;letter-spacing:-.02em}
.article-body h3{font-size:18.5px;font-weight:700;color:var(--ink);margin:30px 0 12px}
.article-body p{margin-bottom:16px}
.article-body ul{margin:0 0 18px;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-bottom:9px}
.article-body li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--aqua);opacity:.55}
.article-body img{border-radius:var(--r-m);margin:22px 0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.8px}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 16px;text-align:left}
.article-body th{background:var(--bg);font-weight:700;color:var(--ink)}
.tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:38px;padding-top:28px;border-top:1px solid var(--line)}
.tags a{font-size:13px;padding:7px 15px;border-radius:var(--r-pill);background:var(--bg-2);color:var(--ink-2);transition:.25s}
.tags a:hover{background:var(--aqua-l);color:var(--aqua-d)}

/* pagination */
.pager{display:flex;justify-content:center;gap:8px;margin-top:54px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:var(--surface);border:1px solid var(--line);font-size:14.5px;font-weight:600;
  color:var(--ink-2);transition:.28s var(--ease);
}
.pager a:hover{border-color:var(--aqua);color:var(--aqua-d)}
.pager .is-now{background:var(--aqua);border-color:var(--aqua);color:#fff}
.pager .is-dis{opacity:.45;pointer-events:none}

/* ---------- 17. Sidebar layout ---------- */
.layout{display:grid;grid-template-columns:270px 1fr;gap:44px;align-items:start}
.side{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:14px;position:sticky;top:calc(var(--nav-h) + 20px)}
.side h4{font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);padding:12px 14px 10px}
.side a{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:12px;font-size:14.6px;font-weight:550;color:var(--ink-2);transition:.25s}
.side a:hover{background:var(--bg-2);color:var(--ink)}
.side a.is-active{background:var(--aqua-l);color:var(--aqua-d);font-weight:700}
.side a svg{width:14px;height:14px;opacity:0;transition:.25s}
.side a:hover svg,.side a.is-active svg{opacity:1}

/* ---------- 18. Empty state ---------- */
.empty{text-align:center;padding:80px 24px;background:var(--surface);border:1px dashed var(--line-2);border-radius:var(--r-l)}
.empty svg{width:56px;height:56px;color:var(--line-2);margin:0 auto 20px}
.empty p{color:var(--ink-3)}

/* ---------- 18b. Sub nav (homepage anchor bar) ---------- */
.subnav{
  position:sticky;top:var(--nav-h);z-index:850;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line);
}
.subnav-in{display:flex;gap:6px;align-items:center;overflow-x:auto;scrollbar-width:none;height:56px}
.subnav-in::-webkit-scrollbar{display:none}
.subnav a{
  padding:8px 16px;border-radius:var(--r-pill);font-size:14px;font-weight:600;
  color:var(--ink-3);white-space:nowrap;transition:.26s var(--ease);
}
.subnav a:hover{color:var(--ink);background:var(--bg-2)}
.subnav a.is-active{background:var(--aqua-l);color:var(--aqua-d)}

/* ---------- 18c. Utilities ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 19. Footer ---------- */
.ft{background:var(--dark);color:#fff;padding:76px 0 0}
.ft-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:56px}
.ft .brand-txt b{color:#fff}
.ft .brand-txt i{color:var(--mint)}
.ft-about{margin-top:22px;font-size:14.4px;color:rgba(255,255,255,.55);line-height:1.85;max-width:320px}
.ft h4{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.45);margin-bottom:20px}
.ft-links{display:grid;gap:12px}
.ft-links a{font-size:14.4px;color:rgba(255,255,255,.68);transition:.25s var(--ease);width:fit-content}
.ft-links a:hover{color:var(--mint);transform:translateX(3px)}
.ft-contact{display:grid;gap:14px}
.ft-contact li{display:flex;gap:11px;font-size:14.4px;color:rgba(255,255,255,.68);line-height:1.7}
.ft-contact svg{width:17px;height:17px;color:var(--mint);flex:none;margin-top:4px}
.ft-bot{border-top:1px solid rgba(255,255,255,.09);padding:26px 0;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.42)}
.ft-bot a:hover{color:var(--mint)}

/* ---------- 20. Back to top ---------- */
.totop{
  position:fixed;right:26px;bottom:26px;z-index:800;width:48px;height:48px;border-radius:50%;
  background:var(--dark);color:#fff;border:0;display:grid;place-items:center;
  box-shadow:0 10px 30px rgba(6,26,36,.26);opacity:0;transform:translateY(14px);
  transition:.4s var(--ease);pointer-events:none;
}
.totop.is-on{opacity:1;transform:none;pointer-events:auto}
.totop:hover{background:var(--aqua-d);transform:translateY(-3px)}
.totop svg{width:19px;height:19px}

/* ---------- 21. Reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.is-in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.rv-d4{transition-delay:.32s}.rv-d5{transition-delay:.4s}.rv-d6{transition-delay:.48s}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .chip{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- 22. Responsive ---------- */
@media (max-width:1100px){
  .hero-in{grid-template-columns:1fr;gap:48px}
  .hero .lead{max-width:100%}
  .hero-art{max-width:620px;margin:0 auto;width:100%}
  .spec-wrap{grid-template-columns:1fr;gap:38px}
  .bento{grid-template-columns:repeat(6,1fr)}
  .bt--7,.bt--5,.bt--6{grid-column:span 6}
  .plist{grid-template-columns:repeat(2,1fr)}
  .ft-top{grid-template-columns:1fr 1fr;gap:38px}
}
@media (max-width:900px){
  .nav-links,.nav-right .btn{display:none}
  .burger{display:block}
  .drawer{display:flex}
  .g-3,.g-4{grid-template-columns:repeat(2,1fr)}
  .layout{grid-template-columns:1fr}
  .side{position:static}
  .sec{padding:82px 0}
  .hero{padding-top:calc(var(--nav-h) + 52px)}
  .article{padding:38px 30px}
  .cta-in{padding:56px 32px}
}
@media (max-width:640px){
  :root{--nav-h:64px}
  .wrap{padding:0 18px}
  .sec{padding:66px 0}
  .g-2,.g-3,.g-4,.plist{grid-template-columns:1fr}
  .bt--12 .grid > div{padding:0 !important;border:0 !important}
  .bt--12 .grid > div + div{margin-top:20px;padding-top:20px !important;border-top:1px solid rgba(255,255,255,.09) !important}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .stat{padding:32px 20px}
  .duo{grid-template-columns:1fr}
  .ba-row{grid-template-columns:1fr;gap:10px;text-align:left}
  .ba-arrow{transform:rotate(90deg)}
  .hero-trust{gap:16px 22px}
  .chip--1{left:0}.chip--2{right:0}
  .steps::before{left:23px}
  .step{grid-template-columns:48px 1fr;gap:18px}
  .step-n{width:48px;height:48px;font-size:16px}
  .step-body{padding:22px 22px}
  .card{padding:28px 24px}
  .bt{padding:28px 24px}
  .ft-top{grid-template-columns:1fr;gap:34px}
  .ft-bot{justify-content:center;text-align:center}
  .btn{width:100%}
  .btn-group,.hero-cta{flex-direction:column;align-items:stretch}
  .cta-in .btn-group{width:100%}
  .brand-txt i{display:none}
}

/* ---------- 23. Print ---------- */
@media print{
  .nav,.drawer,.totop,.hero::before,.cta-in::before{display:none}
  body{background:#fff}
  .sec{padding:24px 0}
  .rv{opacity:1;transform:none}
}