/* АЛА-ТОО — direction A «Шамал» */
:root{
  --bg:#F4FAFC;
  --ink:#0E2233;
  --blue:#00406E;
  --blue-2:#005A8C;
  --gold:#E09630;      /* 仅用于深蓝底大字/图形 */
  --line:rgba(14,34,51,.12);
  --muted:rgba(14,34,51,.62);
  --wrap:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Inter","Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.02em;line-height:1.08}
p{margin:0}
.wrap{width:min(var(--wrap),calc(100% - 48px));margin-inline:auto}
@media(max-width:640px){.wrap{width:calc(100% - 32px)}}

.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:16px;z-index:99;background:var(--blue);color:#fff;padding:10px 16px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  padding:14px 0;
  background:transparent;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),padding .35s var(--ease);
}
.site-header.is-solid{
  background:rgba(244,250,252,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line);
  padding:8px 0;
}
.header-inner{display:flex;align-items:center;gap:24px}
.brand img{width:132px;height:auto}
.nav{display:flex;gap:26px;margin-left:auto;font-size:14.5px;letter-spacing:.01em}
.nav a{position:relative;padding:6px 0;color:var(--ink);opacity:.82}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--blue);
  transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease);
}
.nav a:hover{opacity:1}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}
.lang{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;opacity:.7}
.lang-btn{background:none;border:0;padding:6px 2px;cursor:pointer;letter-spacing:.06em;opacity:.55;min-height:32px}
.lang-btn.is-active{opacity:1;font-weight:600}
.lang-btn:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
.burger{display:none;background:none;border:0;width:44px;height:44px;padding:12px;cursor:pointer}
.burger span{display:block;height:1.5px;background:var(--ink);margin:5px 0;transition:transform .3s var(--ease),opacity .3s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(96px + env(safe-area-inset-top)) 0 0;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-10% -5% auto;height:120%;
  background:radial-gradient(58% 52% at 72% 42%,rgba(0,64,110,.06),transparent 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,72px);align-items:center;min-height:min(70svh,620px);position:relative}
.eyebrow{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:18px;
}
.eyebrow.gold{color:var(--gold)}
.hero h1{font-size:clamp(2.35rem,5.4vw,4.6rem);max-width:12ch;text-wrap:balance}
html[lang="zh-CN"] .hero h1{max-width:18em;letter-spacing:0}
.lead{margin-top:24px;max-width:46ch;font-size:clamp(1rem,1.35vw,1.15rem);color:var(--muted);line-height:1.7}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:52px;padding:0 30px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .45s var(--ease),background .3s,color .3s,border-color .3s;
  will-change:transform;
}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-2)}
.btn-ghost{border:1px solid rgba(14,34,51,.22);color:var(--ink)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-gold{background:var(--gold);color:var(--ink);margin-top:28px}
.btn-gold:hover{background:#eda34a}
.note{margin-top:20px;font-size:13px;color:var(--muted)}
.hero-media{position:relative;aspect-ratio:1/1;display:grid;place-items:center}
.hero-media::before{
  content:"";position:absolute;inset:-6%;border-radius:50%;
  background:radial-gradient(circle at 50% 45%,rgba(0,64,110,.10),transparent 62%);
  filter:blur(8px);
}
.loop{
  width:100%;height:100%;object-fit:cover;position:relative;z-index:1;
  mix-blend-mode:multiply;transform:scale(1.3);
  -webkit-mask-image:radial-gradient(circle at 50% 50%,#000 40%,transparent 64%);
  mask-image:radial-gradient(circle at 50% 50%,#000 40%,transparent 64%);
}
.hero-band{
  height:14px;margin-top:clamp(32px,6vw,72px);
  background:var(--blue);
}

/* ---------- sections ---------- */
.section{padding:clamp(72px,10vw,128px) 0}
.sec-head{max-width:760px;margin-bottom:clamp(40px,6vw,72px)}
.sec-head h2{font-size:clamp(1.9rem,3.6vw,3.1rem)}
.sec-lead{margin-top:20px;max-width:58ch;color:var(--muted);font-size:clamp(1rem,1.2vw,1.08rem)}

/* cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,40px)}
.card{
  background:#fff;border-radius:14px;overflow:hidden;
  box-shadow:0 1px 0 var(--line),0 24px 48px -32px rgba(14,34,51,.28);
}
.card-media{overflow:hidden;background:#eef4f7}
.card-media img{width:100%;height:auto;transition:transform 1.1s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:clamp(22px,3vw,34px)}
.card-body h3{font-size:clamp(1.2rem,1.7vw,1.5rem)}
.card-sub{margin-top:8px;color:var(--muted);font-size:14px}
.spec{margin:22px 0 0;display:grid;gap:0}
.spec > div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid var(--line);font-size:14px}
.spec dt{color:var(--muted)}
.spec dd{margin:0;text-align:right}

/* band */
.band{background:var(--blue);color:#fff;position:relative;overflow:hidden}
.band::after{
  content:"";position:absolute;inset:auto -10% -40% auto;width:60%;aspect-ratio:1;
  border:1px solid rgba(224,150,48,.35);border-radius:50%;pointer-events:none;
}
.band .eyebrow{color:var(--gold)}
.band-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(32px,6vw,80px);align-items:center;position:relative;z-index:1}
.band h2{font-size:clamp(1.9rem,3.4vw,2.9rem);color:#fff;max-width:16ch;text-wrap:balance}
html[lang="zh-CN"] .band h2{max-width:20em;letter-spacing:0}
html[lang="zh-CN"] .sec-head h2,html[lang="zh-CN"] .contact-grid h2{letter-spacing:0}
.band-text{margin-top:22px;max-width:52ch;color:rgba(255,255,255,.78);line-height:1.75}
.halal-mark{display:grid;place-items:center}
.halal-ring{
  width:min(300px,60vw);aspect-ratio:1;border-radius:50%;
  border:1px solid rgba(224,150,48,.55);
  display:grid;place-content:center;text-align:center;gap:6px;
  box-shadow:inset 0 0 0 14px rgba(224,150,48,.06);
}
.halal-word{font-size:clamp(2rem,4vw,2.8rem);font-weight:600;letter-spacing:.16em;color:var(--gold)}
.halal-sub{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.65)}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,36px);counter-reset:s}
.steps li{padding-top:26px;border-top:1px solid var(--line)}
.step-no{display:block;font-size:12px;letter-spacing:.2em;color:var(--muted);margin-bottom:18px}
.steps h3{font-size:1.15rem;margin-bottom:10px}
.steps p{color:var(--muted);font-size:14.5px;line-height:1.7}

/* strip */
.strip{padding:0 0 clamp(72px,10vw,120px)}
.strip-inner{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(24px,5vw,64px);align-items:center}
.strip-text{font-size:clamp(1.35rem,2.4vw,2rem);font-weight:600;letter-spacing:-.02em;max-width:14ch}
.strip img{border-radius:12px;width:100%}

/* contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,6vw,80px)}
.contact-grid h2{font-size:clamp(1.9rem,3.6vw,3rem)}
.contact-list{list-style:none;padding:0;margin:36px 0 0;display:grid;gap:0}
.contact-list li{display:flex;justify-content:space-between;gap:16px;padding:16px 0;border-top:1px solid var(--line);font-size:15px}
.contact-list span{color:var(--muted)}
.contact-list em{font-style:normal;color:var(--muted)}
.contact-list a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}

.form{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-content:start}
.field{display:grid;gap:7px}
.field-full{grid-column:1/-1}
.field label{font-size:13px;color:var(--muted);letter-spacing:.02em}
.field input,.field textarea{
  width:100%;min-height:50px;padding:13px 16px;border:1px solid rgba(14,34,51,.18);
  border-radius:8px;background:#fff;font:inherit;font-size:16px;color:var(--ink);
  transition:border-color .25s,box-shadow .25s;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field textarea:focus{
  outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,64,110,.12);
}
.field input:invalid:not(:placeholder-shown){border-color:#b4423f}
.form .btn{width:100%;margin-top:6px}
.form-msg{grid-column:1/-1;font-size:14px;min-height:22px;color:var(--blue)}
.form-msg.is-error{color:#b4423f}

/* footer */
.site-footer{background:var(--blue);color:rgba(255,255,255,.7);padding:56px 0 40px}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-logo{width:120px;height:auto;opacity:.92}
.site-footer p{font-size:13px;letter-spacing:.02em}

/* ---------- reveal ---------- */
@media (prefers-reduced-motion: no-preference){
  html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
  html.js .reveal.is-visible{opacity:1;transform:none}
  html.js .hero-copy > *{opacity:0;transform:translateY(18px);animation:rise .9s var(--ease) forwards}
  html.js .hero-copy > :nth-child(1){animation-delay:.05s}
  html.js .hero-copy > :nth-child(2){animation-delay:.14s}
  html.js .hero-copy > :nth-child(3){animation-delay:.23s}
  html.js .hero-copy > :nth-child(4){animation-delay:.32s}
  html.js .hero-copy > :nth-child(5){animation-delay:.41s}
  html.js .hero-media{opacity:0;transform:scale(.97);animation:fade 1.2s var(--ease) .2s forwards}
}
@keyframes rise{to{opacity:1;transform:none}}
@keyframes fade{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .loop{display:none}
  .hero-media{background:var(--blue);border-radius:10px}
}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0;padding-bottom:8px}
  .hero-media{max-width:520px;margin-inline:auto;order:-1}
  .hero h1{max-width:14ch}
  .band-grid,.contact-grid,.strip-inner{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav{
    position:fixed;inset:0;background:var(--bg);flex-direction:column;justify-content:center;
    align-items:center;gap:28px;font-size:20px;opacity:0;pointer-events:none;transition:opacity .35s var(--ease);
  }
  .nav.is-open{opacity:1;pointer-events:auto}
  .burger{display:block;margin-left:auto}
  .lang{margin-left:8px}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .hero{padding-top:calc(76px + env(safe-area-inset-top))}
  .hero-media{max-width:280px;margin-inline:auto}
  .hero h1{font-size:clamp(2rem,8.6vw,2.6rem)}
  .btn{width:100%}
  .cta{gap:10px}
  .site-footer{padding-bottom:calc(32px + env(safe-area-inset-bottom))}
}