/* ============================================================
   THE ARCTOS — thearctos.com
   Palette: Deep Indigo, Electric Teal, Warm Amber, Slate White.
   No red. No gradients. Per brand identity spec.
   ============================================================ */

:root{
  --indigo:#1E1B4B;
  --indigo-soft:#2C2870;
  --teal:#00D4AA;
  --teal-dark:#00A886;
  --amber:#F59E0B;
  --slate:#F8FAFC;
  --ink:#1E1B4B;
  --muted:#5B5F76;
  --line:#E3E6EF;
  --white:#FFFFFF;

  --wrap:1140px;
  --radius:14px;
  --shadow:0 2px 20px rgba(30,27,75,.07);
  --shadow-lg:0 10px 40px rgba(30,27,75,.12);

  --font-en:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-zh:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--slate);color:var(--ink);
  font-family:var(--font-en);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
body[data-lang="zh"]{font-family:var(--font-zh);line-height:1.85}
img{max-width:100%;display:block}
a{color:var(--indigo);text-decoration:none}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6em;font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1.1em}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:60px 0}
.section--dark{background:var(--indigo);color:var(--white)}
.section--dark h1,.section--dark h2,.section--dark h3{color:var(--white)}
.section--dark a{color:var(--teal)}
.eyebrow{
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  font-weight:600;color:var(--teal-dark);margin:0 0 18px;
}
.section--dark .eyebrow{color:var(--teal)}
.lede{font-size:1.15rem;color:var(--muted);max-width:62ch}
.section--dark .lede{color:rgba(255,255,255,.78)}
.center{text-align:center}
.center .lede{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:14px 28px;border-radius:999px;
  font-weight:600;font-size:.98rem;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--teal);color:var(--indigo);box-shadow:0 4px 18px rgba(0,212,170,.3)}
.btn--primary:hover{background:var(--teal-dark);color:var(--white)}
.btn--ghost{border-color:var(--indigo);color:var(--indigo);background:transparent}
.btn--ghost:hover{background:var(--indigo);color:var(--white)}
.section--dark .btn--ghost{border-color:rgba(255,255,255,.5);color:var(--white)}
.section--dark .btn--ghost:hover{background:var(--white);color:var(--indigo)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.center .btn-row{justify-content:center}
.btn-note{font-size:.9rem;color:var(--muted);margin-top:14px}
.section--dark .btn-note{color:rgba(255,255,255,.65)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(248,250,252,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--indigo);white-space:nowrap}
.brand img{height:32px;width:auto}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--indigo);
  color:var(--teal);display:grid;place-items:center;font-size:.85rem;font-weight:800;
}
.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{font-size:.95rem;font-weight:500;color:var(--muted);white-space:nowrap}
.nav .btn--login{display:none}          /* mobile menu only — desktop uses header-actions */
.nav a:hover,.nav a.is-active{color:var(--indigo)}
.header-actions{display:flex;align-items:center;gap:12px}
.lang-toggle{
  display:flex;border:1px solid var(--line);border-radius:999px;
  overflow:hidden;background:var(--white);
}
.lang-toggle button{
  border:0;background:transparent;padding:7px 14px;font-size:.85rem;
  font-weight:600;color:var(--muted);cursor:pointer;font-family:inherit;
}
.lang-toggle button.is-active{background:var(--indigo);color:var(--white)}
.btn--login{
  padding:9px 20px;font-size:.9rem;background:var(--indigo);color:var(--white);
  border-radius:999px;font-weight:600;white-space:nowrap;
}
.btn--login:hover{background:var(--indigo-soft)}
.menu-toggle{display:none;border:0;background:transparent;font-size:1.5rem;cursor:pointer;color:var(--indigo)}

/* ---------- Hero ---------- */
.hero{padding:100px 0 88px;background:var(--indigo);color:var(--white)}
.hero h1{color:var(--white);max-width:16ch}
.hero .eyebrow{color:var(--teal)}
.hero-sub{font-size:1.2rem;color:rgba(255,255,255,.82);max-width:56ch}
.hero-note{
  font-size:.98rem;color:var(--amber);border-left:3px solid var(--amber);
  padding-left:16px;margin:26px 0 0;max-width:52ch;
}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;box-shadow:var(--shadow);
}
.section--dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14)}
.card h3{margin-bottom:.4em}
.card p:last-child{margin-bottom:0}
.card-num{
  font-size:.78rem;font-weight:700;letter-spacing:.14em;color:var(--teal-dark);
  display:block;margin-bottom:10px;
}
.section--dark .card-num{color:var(--teal)}

/* ---------- Product tiers ---------- */
.tier{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:36px;box-shadow:var(--shadow);margin-bottom:24px;
}
.tier--feature{border:2px solid var(--teal);box-shadow:var(--shadow-lg)}
.tier-head{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:baseline;margin-bottom:6px}
.tier-step{
  font-size:.75rem;font-weight:800;letter-spacing:.14em;color:var(--teal-dark);
}
.tier h3{font-size:1.5rem;margin:0}
.tier-price{
  display:inline-block;background:var(--indigo);color:var(--white);
  padding:7px 16px;border-radius:999px;font-size:.9rem;font-weight:600;margin:8px 0 18px;
}
.tier-price--free{background:var(--teal);color:var(--indigo)}
.tier ul{list-style:none;padding:0;margin:0 0 20px}
.tier li{padding:9px 0 9px 30px;border-bottom:1px solid var(--line);position:relative}
.tier li:last-child{border-bottom:0}
.tier li::before{
  content:"";position:absolute;left:6px;top:18px;width:8px;height:8px;
  border-radius:50%;background:var(--teal);
}
.callout{
  background:var(--slate);border-left:3px solid var(--amber);
  padding:18px 22px;border-radius:0 8px 8px 0;margin:20px 0;font-size:.97rem;
}

/* ---------- Testimonials ---------- */
.t-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
}
.t-video{position:relative;aspect-ratio:16/9;background:var(--indigo)}
.t-video iframe{width:100%;height:100%;border:0;display:block}
.t-placeholder{
  width:100%;height:100%;display:grid;place-items:center;text-align:center;
  color:rgba(255,255,255,.5);font-size:.85rem;padding:20px;
}
.t-body{padding:24px;flex:1}
.t-quote{font-size:1.05rem;font-weight:500;margin:0 0 14px}
.t-name{font-weight:700;font-size:.95rem;margin:0}
.t-stage{font-size:.82rem;color:var(--muted);margin:2px 0 0}

/* ---------- Videos ---------- */
.v-grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.v-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .15s ease;
}
.v-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.v-thumb{aspect-ratio:16/9;background:var(--indigo);object-fit:cover;width:100%}
.v-info{padding:16px 18px}
.v-title{font-size:.98rem;font-weight:600;margin:0 0 6px;line-height:1.4}
.v-date{font-size:.82rem;color:var(--muted);margin:0}
.shorts-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}
.shorts-grid .v-thumb{aspect-ratio:9/16}
.v-status{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--radius);
  padding:40px 24px;text-align:center;color:var(--muted);
}

/* ---------- Newsletter ---------- */
.nl-block{background:var(--indigo);color:var(--white);padding:72px 0}
.nl-inner{max-width:720px;margin:0 auto;text-align:center}
.nl-inner h2{color:var(--white)}
.nl-list{list-style:none;padding:0;margin:24px 0;text-align:left;display:inline-block}
.nl-list li{padding:6px 0 6px 26px;position:relative;color:rgba(255,255,255,.85)}
.nl-list li::before{content:"";position:absolute;left:0;top:15px;width:8px;height:8px;border-radius:50%;background:var(--teal)}
.nl-form{
  background:var(--white);border-radius:var(--radius);padding:6px;
  margin:26px 0 18px;overflow:hidden;
}
.nl-form iframe{width:100%;border:0;display:block;height:760px}

/* ---------- Split hero: copy left, form right ---------- */
.hero-split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;
}
.eyebrow-pill{
  display:inline-block;border:1px solid var(--teal);color:var(--teal);
  padding:8px 18px;border-radius:999px;font-size:.78rem;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;margin:0 0 26px;
}
.arrow-list{list-style:none;padding:0;margin:26px 0}
.arrow-list li{
  padding:9px 0 9px 32px;position:relative;color:rgba(255,255,255,.9);
}
.arrow-list li::before{
  content:"\2192";position:absolute;left:0;top:9px;color:var(--teal);font-weight:700;
}
.form-card{
  background:var(--white);border-radius:16px;padding:26px 24px 20px;
  box-shadow:0 18px 50px rgba(0,0,0,.28);
}
.form-card h2{font-size:1.3rem;margin:0 0 3px;color:var(--indigo)}
.form-card .form-sub{color:var(--muted);font-size:.92rem;margin:0}
.form-card iframe{width:100%;border:0;display:block;height:720px;margin:0}
.form-card .form-privacy{
  font-size:.79rem;color:var(--muted);line-height:1.6;margin:0;
  border-top:1px solid var(--line);padding-top:13px;
}
@media (max-width:900px){
  .hero-split{grid-template-columns:1fr;gap:34px}
}

/* ---------- Subscribe modal ---------- */
.modal{
  position:fixed;inset:0;z-index:400;display:none;
  align-items:flex-start;justify-content:center;padding:24px 16px;
  background:rgba(15,13,40,.72);backdrop-filter:blur(4px);overflow-y:auto;
}
.modal.is-open{display:flex}
body.modal-open{overflow:hidden}
.modal-box{
  background:var(--white);border-radius:16px;width:100%;max-width:560px;
  box-shadow:0 24px 70px rgba(0,0,0,.4);position:relative;margin:auto;
  animation:modalIn .18s ease-out;
}
@keyframes modalIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-head{padding:28px 30px 6px;text-align:center}
.modal-head h3{font-size:1.35rem;margin:0 0 6px}
.modal-head p{color:var(--muted);font-size:.95rem;margin:0}
.modal-body{padding:6px 18px 10px}
.modal-body iframe{width:100%;border:0;display:block;height:720px;margin:0}
.modal-foot{padding:0 30px 24px;font-size:.82rem;color:var(--muted);text-align:center;line-height:1.6}
.modal-close{
  position:absolute;top:12px;right:14px;width:34px;height:34px;border-radius:50%;
  border:0;background:var(--slate);color:var(--indigo);font-size:1.2rem;line-height:1;
  cursor:pointer;display:grid;place-items:center;
}
.modal-close:hover{background:var(--line)}
.nl-privacy{font-size:.85rem;color:rgba(255,255,255,.6);max-width:56ch;margin:0 auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--indigo);color:rgba(255,255,255,.7);padding:56px 0 32px;font-size:.92rem}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand{color:var(--white);font-weight:700;font-size:1.05rem;margin-bottom:8px}
.site-footer h4{color:var(--white);font-size:.82rem;letter-spacing:.13em;text-transform:uppercase;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:9px}
.site-footer a{color:rgba(255,255,255,.7)}
.site-footer a:hover{color:var(--teal)}
.compliance{margin:28px 0 0;font-size:.84rem;line-height:1.7;color:rgba(255,255,255,.55)}
.compliance strong{color:rgba(255,255,255,.85);display:block;margin-bottom:6px}
.copyright{margin-top:22px;font-size:.82rem;color:rgba(255,255,255,.4)}

/* ---------- Closing thought ---------- */
.closing{
  border-top:1px solid var(--line);padding:56px 0;text-align:center;
}
.closing p{
  font-size:1.25rem;font-weight:500;max-width:44ch;margin:0 auto;color:var(--indigo);
}
.section--dark .closing p{color:var(--white)}

/* ---------- Language visibility ---------- */
[data-lang-en],[data-lang-zh]{display:none}
body[data-lang="en"] [data-lang-en]{display:revert}
body[data-lang="zh"] [data-lang-zh]{display:revert}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:780px){
  .section{padding:64px 0}
  .hero{padding:70px 0 62px}
  .menu-toggle{display:block;margin-left:auto}
  .nav{
    display:none;position:absolute;top:70px;left:0;right:0;background:var(--white);
    flex-direction:column;gap:0;padding:12px 24px 20px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg);margin-left:0;
  }
  .nav.is-open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .header-actions{margin-left:0}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .tier,.card{padding:26px}
  body{font-size:16px}
}
@media (max-width:780px){
  .header-actions .btn--login{display:none}
  .nav .btn--login{display:block;text-align:center;margin-top:14px;border-bottom:0}
}

/* ---------- Footer icon rows ---------- */
.footer-social li{margin-bottom:11px}
.footer-link{display:inline-flex;align-items:center;gap:10px;line-height:1.35}
.footer-link .fi{width:18px;height:18px;flex:0 0 18px;fill:currentColor;opacity:.8;transition:opacity .15s ease}
.footer-link:hover .fi{opacity:1}

/* ---------- Testimonial person row ---------- */
.t-person{display:flex;align-items:center;gap:14px;margin-top:2px}
.t-avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;flex:0 0 56px;background:var(--line)}
.t-person .t-name{margin:0}
.t-person .t-stage{margin:2px 0 0}

/* ---------- Footer company address ---------- */
.footer-addr{font-size:.86rem;line-height:1.65;max-width:34ch}

/* ---------- Article / about pages (added 2026-09-15, revised to match site layout) ---------- */
.body-text p,.body-text ul{max-width:68ch}
.body-text ul{padding-left:1.2em;margin:0 0 1.1em}
.body-text li{margin:.35em 0}
.body-text h2{margin-top:1.6em}
.body-text h2:first-child{margin-top:0}
.data-table-wrap{overflow-x:auto;margin:10px 0 18px;max-width:860px}
.data-table{width:100%;border-collapse:collapse;font-size:1rem;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
.data-table th,.data-table td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.data-table th{background:var(--indigo);color:var(--white);font-weight:600}
.data-table th:first-child,.data-table td:first-child{white-space:nowrap}
.note{color:var(--muted);font-size:.95rem}
.about-photo{display:block;width:100%;max-width:440px;height:auto;margin-left:auto;border-radius:14px;box-shadow:var(--shadow-lg)}
.compliance-box{border-left:3px solid var(--amber);padding:14px 18px;background:var(--white);font-size:.93rem;color:var(--muted);max-width:68ch}
.compliance-box strong{color:var(--indigo);display:block;margin-bottom:4px}
.text-link{color:var(--teal-dark);font-weight:600}
.text-link:hover{text-decoration:underline}
body[data-lang="en"] .zh-only{display:none!important}
@media (max-width:780px){
  .about-photo{margin:0 auto;max-width:360px}
  .data-table th,.data-table td{padding:10px 12px;font-size:.93rem}
}