/* АЛА-ТОО · direction A «Шамал» · v2 */
:root{
  --bg:#F4FAFC;
  --ink:#0E2233;
  --blue:#00406E;
  --blue-deep:#00304F;
  --gold:#E09630;
  --gold-lite:#F2C077;
  --line:rgba(14,34,51,.14);
  --muted:rgba(14,34,51,.64);
  --wrap:1280px;
  --ease:cubic-bezier(.23,1,.32,1);
  --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%;scroll-padding-top:104px;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.62;-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:640;letter-spacing:-.02em;line-height:1.1}
p{margin:0}
.wrap{width:min(var(--wrap),calc(100% - 64px));margin-inline:auto}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}}

.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:60;padding:0;transition:background .35s var(--ease),box-shadow .35s var(--ease)}
.site-header.is-solid{background:rgba(244,250,252,.94);box-shadow:0 1px 0 var(--line)}
/* 首屏页面顶部是浅色留白，header 用深色；视频出现后 LOGO 隐藏，滚过首屏才显示 */
.brand{opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
body.past-hero .brand{opacity:1;visibility:visible}
.site-header:not(.is-solid) .burger:focus-visible,
.site-header:not(.is-solid) .lang-btn:focus-visible{outline-color:#fff}
.header-inner{display:flex;align-items:center;gap:26px;height:44px}
.brand{display:block;width:38px;height:38px;flex:0 0 38px;border-radius:50%;overflow:hidden;position:relative;box-shadow:0 4px 12px rgba(0,0,0,.16)}
.brand-video,.brand-fallback{width:38px;height:38px;object-fit:cover;border-radius:50%}
.brand-fallback[hidden]{display:none}
.nav{display:flex;gap:28px;margin-left:auto;font-size:14.5px}
.nav + .lang{margin-left:20px}
.nav a{position:relative;padding:8px 0;opacity:.84;transition:opacity .25s}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--blue);transform:scaleX(0);transform-origin:right;transition:transform .38s var(--ease)}
.nav a:hover{opacity:1}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}
.lang{display:flex;align-items:center;gap:4px;font-size:13px;letter-spacing:.03em;margin-left:auto}
.lang-btn{display:inline-flex;align-items:center;gap:6px;background:none;border:0;min-height:44px;padding:0 8px;cursor:pointer;opacity:.62;border-radius:6px;transition:opacity .25s}
.flag{width:21px;height:14px;border-radius:2px;flex:0 0 21px;box-shadow:0 0 0 1px rgba(14,34,51,.12)}
.lang-btn.is-active{opacity:1;font-weight:650}
.lang-btn:hover{opacity:.95}
.lang-btn:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.burger{display:none;background:none;border:0;width:44px;height:44px;padding:12px;cursor:pointer;margin-left:2px}
.burger span{display:block;height:1.5px;background:var(--ink);margin:5px 0;transition:transform .3s var(--ease)}
.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;background:var(--bg);color:#fff;
  padding-top:calc(44px + env(safe-area-inset-top));
}
/* 视频容器按视频本身比例（16:9），保证画面完整不裁切 */
.hero-bg{
  position:relative;width:100%;aspect-ratio:16/9;
  overflow:hidden;background:#0d2434;
}
/* 宽屏时两侧用同一画面的模糊放大填充，保证竖版视频完整显示 */
.hero-bg-blur{
  position:absolute;inset:-10%;
  background:url(assets/hero-poster.webp) center/cover no-repeat;
  filter:blur(48px) brightness(.55) saturate(1.15);
  transform:scale(1.06);
}
.hero-bg-video{
  position:relative;width:100%;height:100%;object-fit:contain;
  pointer-events:none;user-select:none;-webkit-user-select:none;
}
.hero-veil{display:none}
.hero-content{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding-bottom:clamp(88px,12vh,150px);
  padding-left:clamp(20px,4.2vw,68px);
  text-align:left;
}
.hero-content.wrap{width:100%;max-width:none}
.hero h1{margin-inline:0}
/* 四行口号：三句短句 + 一句主句 */
.hero h1.hero-lines{
  display:flex;flex-direction:column;align-items:flex-start;gap:0;
  font-size:clamp(1.25rem,1.8vw,2.35rem);line-height:1.38;letter-spacing:.005em;
  font-weight:500;max-width:none;white-space:normal;color:#fff;
  text-shadow:0 2px 14px rgba(0,0,0,.85),0 1px 3px rgba(0,0,0,.7);
}
.hero-line{display:block;color:rgba(255,255,255,.92);font-weight:500}
.hero-main{display:block;margin-top:.55em;font-size:2.05em;line-height:1.14;font-weight:600;color:#fff}
html[lang="zh-CN"] .hero h1.hero-lines{letter-spacing:0}
html[lang="zh-CN"] .hero-line{letter-spacing:.06em}
html[lang="zh-CN"] .hero-main{font-size:2.15em}
html[lang="ru"] .hero-main{font-size:1.92em}
.hero .lead{margin-top:22px;max-width:42ch;color:rgba(255,255,255,.8)}
.hero .eyebrow{color:rgba(255,255,255,.92);font-size:13.5px;letter-spacing:.2em;text-shadow:0 1px 8px rgba(0,0,0,.5)}
.hero .lead{color:rgba(255,255,255,.82)}
.hero .cta{margin-top:32px}
.btn-ghost-light{border:1px solid rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.scroll-hint{position:absolute;left:50%;bottom:22px;z-index:3;width:46px;height:46px;margin-left:-23px;display:grid;place-items:center;border-radius:50%;background:rgba(6,22,34,.38);box-shadow:0 2px 12px rgba(0,0,0,.28)}
.scroll-hint span{
  display:block;width:26px;height:26px;
  border-right:2px solid rgba(255,255,255,.95);border-bottom:2px solid rgba(255,255,255,.95);
  transform:rotate(45deg);animation:bob 2.2s ease-in-out infinite;
  filter:drop-shadow(0 2px 7px rgba(0,0,0,.65));
}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.085)}}
@keyframes bob{0%,100%{transform:translateY(-4px) rotate(45deg);opacity:.55}50%{transform:translateY(4px) rotate(45deg);opacity:1}}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
.eyebrow.gold{color:var(--gold-lite)}
.lead{margin-top:24px;max-width:44ch;font-size:clamp(1rem,1.2vw,1.1rem);color:var(--muted);line-height:1.75}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 30px;border:0;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:transform .3s var(--ease),background .25s,color .25s,border-color .25s;will-change:transform}
.btn:active{transform:scale(.985)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep)}
.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)}
.btn-gold:hover{background:#eda34a}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:3px}

/* ---------- trust ---------- */
.trust{border-block:1px solid var(--line);margin-top:clamp(40px,7vw,88px)}
.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:22px 0}
.trust p{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.trust p + p{border-left:1px solid var(--line);padding-left:24px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 6px}

/* ---------- sections ---------- */
.section{padding:clamp(72px,9vw,120px) 0}
.sec-head{max-width:820px;margin-bottom:clamp(36px,5vw,64px)}
.sec-head h2{font-size:clamp(1.9rem,3.2vw,2.9rem);text-wrap:balance}
html[lang="zh-CN"] .sec-head h2,html[lang="zh-CN"] .band h2,html[lang="zh-CN"] .contact-h{letter-spacing:0}
.sec-lead{margin-top:18px;max-width:54ch;color:var(--muted)}

/* products */
.product-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,72px);align-items:center}
.product-media{margin-left:calc(50% - 50vw);height:min(78svh,720px);overflow:hidden}
.product-media img{width:100%;height:100%;object-fit:cover;object-position:50% 30%}
.product-copy h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:16px}
.product-lead{color:var(--muted);max-width:40ch}
.spec{margin:32px 0 0;display:grid}
.spec > div{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-top:1px solid var(--line);font-size:14.5px}
.spec > div:last-child{border-bottom:1px solid var(--line)}
.spec dt{color:var(--muted)}
.spec dd{margin:0;text-align:right}
.product-secondary{display:flex;gap:16px;align-items:center;margin:32px 0 0}
.product-secondary img{width:88px;height:120px;object-fit:cover;border-radius:6px}
.product-secondary figcaption{font-size:13.5px;color:var(--muted);max-width:28ch}

/* land */
.land{position:relative;height:min(78svh,780px);min-height:540px;overflow:hidden;background:#08202f}
.land-bg{width:100%;height:100%;object-fit:cover;object-position:50% 24%}
.land-scrim{position:absolute;inset:0;background:linear-gradient(to top,rgba(4,18,28,.86) 0%,rgba(4,18,28,.42) 34%,rgba(4,18,28,.05) 62%,transparent 100%)}
.land-copy{position:absolute;left:0;right:0;bottom:clamp(40px,7vw,88px);color:#fff}
.land-copy h2{font-size:clamp(1.9rem,3.6vw,3.2rem);max-width:16ch;margin-bottom:18px;text-wrap:balance}
html[lang="zh-CN"] .land-copy h2{max-width:20em;letter-spacing:0}
.land-copy p:last-child{max-width:46ch;color:rgba(255,255,255,.8)}

/* band */
.band{background:var(--blue);color:#fff}
.band-head{max-width:760px;margin-bottom:clamp(36px,5vw,60px)}
.band h2{font-size:clamp(1.9rem,3.2vw,2.9rem);color:#fff;text-wrap:balance}
.proof{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,4vw,56px)}
.proof li{padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.proof-no{display:block;font-size:12px;letter-spacing:.2em;color:var(--gold-lite);margin-bottom:18px}
.proof h3{font-size:1.1rem;margin-bottom:10px;color:#fff}
.proof p{font-size:14.5px;color:rgba(255,255,255,.76);line-height:1.7}
.band-foot{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:clamp(36px,5vw,56px);padding-top:28px;border-top:1px solid rgba(255,255,255,.18)}
.band-foot p{color:rgba(255,255,255,.76);font-size:14.5px}

/* timeline */
.timeline{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.timeline::before{content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--line)}
.timeline li{position:relative;padding:34px 24px 0 0}
.t-node{position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;background:var(--bg);border:1.5px solid var(--blue)}
.timeline h3{font-size:1.1rem;margin-bottom:8px}
.timeline p{font-size:14.5px;color:var(--muted);line-height:1.7;max-width:26ch}

/* contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,6vw,88px)}
.contact-h{font-size:clamp(1.9rem,3.2vw,2.9rem);text-wrap:balance}
.contact-list{list-style:none;padding:0;margin:36px 0 0;display:grid}
.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}
.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)}
.field input,.field textarea{width:100%;min-height:52px;padding:13px 16px;border:1px solid rgba(14,34,51,.2);border-radius:8px;background:#fff;font:inherit;font-size:16px;color:var(--ink);transition:border-color .22s,box-shadow .22s}
.field textarea{resize:vertical;min-height:112px}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,64,110,.14)}
.field input:invalid:not(:placeholder-shown){border-color:#b4423f}
.field input[aria-invalid="true"]{border-color:#b4423f;box-shadow:0 0 0 3px rgba(180,66,63,.12)}
.form .btn{width:100%;margin-top:4px;appearance:none;border:0}
.form-msg{grid-column:1/-1;font-size:14px;min-height:22px;color:var(--blue)}
.form-msg.is-error{color:#b4423f}

/* ---------- story（品牌理念叙事） ---------- */
.story{position:relative;background:var(--bg);padding:clamp(72px,9vw,128px) 0 clamp(48px,6vw,80px);overflow:hidden}
.story-wrap{position:relative;padding-left:clamp(22px,3.2vw,44px)}
.story-spine{
  position:absolute;left:0;top:8px;bottom:56px;width:1px;
  background:linear-gradient(to bottom,transparent,rgba(224,150,48,.5) 6%,rgba(224,150,48,.5) 94%,transparent);
}
.story-item{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(20px,3vw,44px);align-items:center;margin-bottom:clamp(64px,8vw,116px)}
.story-item::before{
  content:"";position:absolute;left:calc(-1 * clamp(22px,3.2vw,44px) - 3px);top:8px;
  width:7px;height:7px;background:rgba(224,150,48,.3);transform:rotate(45deg);
  transition:background .4s var(--ease),box-shadow .4s var(--ease);
}
.story-item.is-visible::before{background:var(--gold);box-shadow:0 0 0 4px rgba(224,150,48,.12)}
/* 区首：一句主张，把四段收成四条证据 */
.story-lede{max-width:22em;margin-bottom:clamp(44px,5.5vw,76px);position:relative}
.story-kicker{font-size:11px;letter-spacing:.24em;color:#8A5A16;margin-bottom:16px;font-variant-numeric:tabular-nums}
.story-lede h2{font-size:clamp(1.85rem,3.2vw,2.85rem);line-height:1.22;margin-bottom:16px;text-wrap:balance}
.story-lede p{font-size:clamp(.95rem,1.05vw,1.02rem);color:rgba(14,34,51,.72);line-height:1.85;max-width:24em}

.story-no{font-size:12px;letter-spacing:.24em;color:#8A5A16;margin-bottom:16px;font-variant-numeric:tabular-nums}
.story h2{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  font-size:clamp(1.55rem,2.5vw,2.3rem);font-weight:600;margin-bottom:18px;text-wrap:balance;line-height:1.22;
}
html[lang="zh-CN"] .story h2{letter-spacing:.02em}
html[lang="ru"] .story h2{font-family:var(--font)}
.story-body{font-size:clamp(.95rem,1.05vw,1.02rem);line-height:1.9;color:rgba(14,34,51,.76);max-width:30em;text-wrap:pretty}
html[lang="zh-CN"] .story-body{line-height:1.95}

.story-a .story-text{grid-column:1/6}
.story-a .story-media{grid-column:6/13}
.story-b .story-media{grid-column:1/6;align-self:end}
.story-b .story-text{grid-column:6/13;align-self:end;padding-bottom:8px}
.story-d .story-media{grid-column:1/6}
.story-d .story-text{grid-column:6/13}

.story-media{overflow:hidden;border-radius:3px;background:#e8eff3}
.story-media img{width:100%;height:100%;object-fit:cover;display:block}
.story-media-a{aspect-ratio:4/3}
.story-media-b{aspect-ratio:4/5}
.story-media-d{aspect-ratio:4/5}

/* 全幅跨页 */
.story-c{
  display:block;grid-template-columns:none;
  margin-inline:calc(50% - 50vw);
  height:min(72vh,640px);min-height:400px;
  margin-bottom:clamp(64px,8vw,116px);
}
.story-c::before{display:none}
.story-media-c{position:absolute;inset:0;border-radius:0}
.story-media-c img{width:100%;height:100%;object-fit:cover;object-position:50% 58%}
.story-overlay{
  position:absolute;left:0;right:0;bottom:0;
  padding:clamp(28px,4vw,56px) clamp(24px,7vw,110px);
  background:linear-gradient(to top,rgba(6,20,30,.84) 0%,rgba(6,20,30,.5) 55%,transparent 100%);
  color:#fff;
}
.story-overlay .story-no{color:var(--gold-lite)}
.story-overlay h2{color:#fff;max-width:20ch}
.story-overlay .story-body{color:rgba(255,255,255,.82);max-width:46ch}

/* 收束记号：只留一个 8px 实心菱形，放在文字轴线末 */
.story-bloom{
  display:block;width:8px;height:8px;margin-top:30px;
  background:var(--gold);transform:rotate(45deg);
}
.story-tip{display:none}

@media (prefers-reduced-motion: no-preference){
  html.js .story-media img{clip-path:inset(0 100% 0 0);transition:clip-path 1.05s var(--ease)}
  html.js .story-item.is-visible .story-media img{clip-path:inset(0)}
  html.js .story-text,html.js .story-overlay{opacity:0;transition:opacity .55s var(--ease) .18s}
  html.js .story-item.is-visible .story-text,html.js .story-item.is-visible .story-overlay{opacity:1}
}

@media(max-width:899px){
  .story{padding-top:clamp(56px,8vw,88px)}
  .story-wrap{padding-left:0}
  .story-spine{left:10px}
  .story-item{grid-template-columns:1fr;gap:18px;margin-bottom:64px;padding-left:24px}
  .story-a .story-text,.story-a .story-media,
  .story-b .story-media,.story-b .story-text,
  .story-d .story-media,.story-d .story-text{grid-column:1/-1}
  .story-a .story-media,.story-b .story-media,.story-d .story-media{order:1;aspect-ratio:4/5}
  .story-a .story-text,.story-b .story-text,.story-d .story-text{order:2;align-self:auto;padding-bottom:0}
  .story-item::before{left:6px}
  /* 03 全出血：图、遮罩、文字同一宽度 */
  .story-c{
    margin-inline:calc(50% - 50vw);
    padding-left:0;
    height:auto;aspect-ratio:4/5;
  }
  .story-media-c{position:absolute;inset:0}
  .story-media-c img{object-position:50% 60%}
  .story-overlay{left:0;right:0;padding:26px 28px 30px}
  .story-overlay h2{font-size:1.45rem}
  .story-overlay .story-body{font-size:.92rem;line-height:1.8}
  .story-body{max-width:100%}
  .story-lede{padding-left:24px;margin-bottom:52px}
}

/* footer */
.site-footer{background:var(--blue-deep);color:rgba(255,255,255,.72);padding:56px 0 40px}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-logo{width:118px;height:auto;opacity:.95}
.footer-meta{display:grid;gap:6px;text-align:right}
.footer-legal{font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.01em}
.site-footer p{font-size:13px}
@media(max-width:640px){.footer-meta{text-align:left}}

/* ---------- motion ---------- */
@media (prefers-reduced-motion: no-preference){
  html.js .hero-content > *{opacity:0;transform:translateY(18px);animation:rise .82s var(--ease) forwards}
  html.js .hero-content > :nth-child(1){animation-delay:.06s}
  html.js .hero-content > :nth-child(2){animation-delay:.14s}
  html.js .hero-content > :nth-child(3){animation-delay:.22s}
  html.js .hero-content > :nth-child(4){animation-delay:.30s}
  html.js .hero-content > :nth-child(5){animation-delay:.38s}
  html.js .hero-bg-video{animation:fade 1.4s var(--ease) .1s both}
  html.js .reveal-media{opacity:0;transition:opacity .9s var(--ease)}
  html.js .reveal-media.is-visible{opacity:1}
  html.js .land-bg{transform:scale(1.06);transition:transform 1.4s var(--ease)}
  html.js .land.is-visible .land-bg{transform:scale(1)}
}
@keyframes rise{to{opacity:1;transform:none}}
@keyframes imgIn{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .hero-bg img{animation:none;transform:none}
  .scroll-hint span{animation:none;opacity:.8}
  .brand-video{display:none}
  .brand-fallback{display:block!important}
  .hero-bg-video{display:none}
  .hero-bg{background:url(assets/hero-poster.webp) center/cover no-repeat}
}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .product-grid{grid-template-columns:1fr;gap:36px}
  .product-media{margin-left:0;height:min(60svh,560px)}
  .contact-grid{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr 1fr;row-gap:28px}
  .timeline::before{display:none}
  .timeline li{padding-top:26px}
  .t-node{top:0}
}
/* 视频断点 900px 与 JS 保持一致 */
@media(max-width:899px){
  .hero-bg{aspect-ratio:9/16}
}
@media(max-width:760px){
  .nav{position:fixed;inset:0;background:var(--bg);flex-direction:column;justify-content:center;align-items:center;gap:26px;font-size:20px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s var(--ease),visibility .3s}
  .nav.is-open{opacity:1;visibility:visible;pointer-events:auto}
  .burger{display:block;order:0;margin-left:0}
  .nav + .lang{order:1;margin-left:auto}
  .header-inner{gap:8px}
  .brand,.brand-video,.brand-fallback{width:34px;height:34px;flex-basis:34px}
  .header-inner{height:44px}
  .hero{padding-top:calc(44px + env(safe-area-inset-top))}
  .hero h1.hero-lines{font-size:1.05rem;line-height:1.44;white-space:normal}
  .hero-main{font-size:1.38em;line-height:1.18}
  html[lang="zh-CN"] .hero-main{font-size:1.4em}
  html[lang="ru"] .hero h1.hero-lines{font-size:1rem}
  html[lang="ru"] .hero-main{font-size:1.3em}
  .hero-bg{aspect-ratio:9/16}
  .hero-content{padding-bottom:calc(124px + env(safe-area-inset-bottom))}
  .hero h1{text-shadow:0 2px 16px rgba(0,0,0,.6),0 1px 3px rgba(0,0,0,.5)}
  .lang-btn{padding:0 6px;font-size:12px}
  .flag{width:18px;height:12px;flex-basis:18px}
  .trust-inner{grid-template-columns:1fr 1fr;gap:14px 0;padding:18px 0}
  .trust p + p{border-left:0;padding-left:0}
  .trust p:nth-child(even){padding-left:16px;border-left:1px solid var(--line)}
  .product-media{height:420px}
  .btn{width:100%}
  .cta{gap:10px}
  .form{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .site-footer{padding-bottom:calc(32px + env(safe-area-inset-bottom))}
  .land{min-height:600px;height:auto;aspect-ratio:3/4}
}