/* roulang page: index */
:root{
  --green:#1B8A66;
  --green-deep:#146B50;
  --green-soft:#d7ebe3;
  --copper:#C45C26;
  --copper-deep:#A0491E;
  --copper-soft:#f3ddd0;
  --ink:#1C2321;
  --paper:#F3EFE6;
  --panel:#E8E2D4;
  --steel:#5E6762;
  --muted:#6e7772;
  --dark:#141918;
  --dark-2:#1a211f;
  --line:#C9C2B3;
  --white:#FBF8F1;
  --radius-card:8px;
  --radius-btn:4px;
  --radius-badge:2px;
  --shadow:0 12px 28px rgba(28,35,33,.08);
  --shadow-sm:0 8px 16px rgba(28,35,33,.06);
  --max:1240px;
  --gap:24px;
  --header-top:42px;
  --header-main:70px;
  --text:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:var(--text);
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--green-deep);text-decoration:none;transition:color .2s var(--ease),border-color .2s,background .2s,transform .2s,box-shadow .2s}
a:hover{color:var(--copper)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol,p,h1,h2,h3,h4,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
::selection{background:var(--green);color:#fff}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,monospace;font-variant-numeric:tabular-nums}
.cut{clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px)}
.dotgrid{
  background-image:radial-gradient(rgba(28,35,33,.07) 1px,transparent 1px);
  background-size:12px 12px;
}
.synlines{
  background-color:var(--dark);
  background-image:
    linear-gradient(115deg,transparent 0 42%,rgba(27,138,102,.08) 42.2% 42.6%,transparent 42.8%),
    linear-gradient(160deg,transparent 0 63%,rgba(196,92,38,.07) 63.2% 63.5%,transparent 63.7%),
    radial-gradient(circle at 18% 20%,rgba(27,138,102,.12),transparent 28%);
}

/* Buttons / badges */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-weight:650;letter-spacing:.04em;line-height:1;white-space:nowrap;
  transition:background .2s,color .2s,border-color .2s,transform .2s,box-shadow .2s;
}
.btn-primary{background:var(--copper);color:#fff;box-shadow:0 8px 16px rgba(196,92,38,.22)}
.btn-primary:hover{background:var(--copper-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 18px rgba(196,92,38,.28),0 0 0 1px var(--copper-deep)}
.btn-primary:active{transform:translateY(0);background:#8d3f18}
.btn-ghost{background:var(--white);color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--green);color:#fff;border-color:var(--green);transform:translateY(-2px)}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;
  height:28px;padding:0 12px;border-radius:var(--radius-btn);
  background:var(--copper);color:#fff;font-size:12px;font-weight:650;letter-spacing:.06em
}
.btn-mini:hover{background:var(--copper-deep);color:#fff}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 8px;border-radius:var(--radius-badge);
  background:rgba(251,248,241,.12);border:1px solid rgba(251,248,241,.28);
  color:var(--white);font-size:12px;letter-spacing:.06em
}
.badge b{color:#f0c9b0;font-weight:700}
.tag{
  display:inline-block;padding:2px 8px;border:1px solid var(--line);border-radius:var(--radius-badge);
  font-size:12px;color:var(--steel);letter-spacing:.08em;background:var(--white)
}
.link-text{color:var(--green-deep);font-weight:650;border-bottom:1px solid currentColor;padding-bottom:1px}
.link-text:hover{color:var(--copper)}

/* Header dual-row */
.site-header{position:relative;z-index:80;width:100%}
.header-top{
  height:var(--header-top);background:#ece6d8;color:var(--steel);
  border-bottom:1px solid #b9b3a5;font-size:13px
}
.header-top-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-tagline{color:var(--ink);font-weight:600;letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-tools{display:flex;align-items:center;gap:18px;flex-shrink:0}
.header-tools a{color:var(--ink)}
.header-tools a:hover{color:var(--green-deep)}
.tool-time{color:var(--steel)}
.header-main{
  height:var(--header-main);background:rgba(243,239,230,.92);backdrop-filter:saturate(1.2) blur(8px);
  border-bottom:1px solid var(--line)
}
.header-main.is-stuck{
  position:fixed;left:0;right:0;top:0;background:var(--paper);
  box-shadow:0 8px 20px rgba(28,35,33,.08)
}
.header-placeholder{display:none;height:var(--header-main)}
.header-placeholder.on{display:block}
.header-main-inner{height:100%;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.logo:hover{color:var(--ink)}
.logo-mark{width:36px;height:36px;flex-shrink:0}
.logo-name{font-size:18px;font-weight:750;letter-spacing:.12em;line-height:1.1}
.logo-name small{display:block;font-size:11px;font-weight:500;letter-spacing:.18em;color:var(--steel);margin-top:2px}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;margin-right:12px}
.nav-desktop a{
  position:relative;display:flex;align-items:center;height:var(--header-main);
  padding:0 11px;color:var(--ink);font-size:14px;font-weight:600;letter-spacing:.04em
}
.nav-desktop a:hover{color:var(--green-deep)}
.nav-desktop a.is-current{color:var(--green-deep)}
.nav-desktop a.is-current::after{
  content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;background:var(--copper)
}
.header-cta{flex-shrink:0}
.icon-tools{display:none;align-items:center;gap:8px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--ink);background:var(--white)
}
.menu-toggle{width:44px;height:44px;display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Drawer */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--paper);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px 24px 100px
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer nav a{
  display:flex;align-items:center;min-height:48px;padding:8px 4px;
  border-bottom:1px solid var(--line);color:var(--ink);font-size:20px;font-weight:650
}
.drawer-foot{
  position:absolute;left:0;right:0;bottom:0;padding:16px 24px calc(16px + env(safe-area-inset-bottom));
  background:var(--paper);border-top:1px solid var(--line)
}
.drawer-foot .btn{width:100%}
.drawer-mask{position:fixed;inset:0;z-index:190;background:rgba(20,25,24,.35);opacity:0;pointer-events:none;transition:opacity .2s}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
body.nav-lock{overflow:hidden}

/* Hero cinematic */
.hero{position:relative;min-height:calc(100vh - var(--header-top) - var(--header-main));color:#fff;background:var(--dark);overflow:hidden}
.hero-slides{position:absolute;inset:0}
.hero-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .8s ease;
  background-size:cover;background-position:center;background-repeat:no-repeat
}
.hero-slide.is-active{opacity:1;z-index:1}
.hero-slide::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,19,.94) 0%,rgba(16,20,19,.78) 42%,rgba(16,20,19,.38) 100%)
}
.hero-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,20,19,.2) 0%,transparent 18%,transparent 70%,rgba(16,20,19,.55) 100%)
}
.hero-inner{
  position:relative;z-index:3;min-height:inherit;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:24px;
  padding:72px 0 88px;align-items:center
}
.hero-copy{max-width:680px}
.hero-kicker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.hero h1,.slide-title{
  font-size:44px;line-height:1.18;font-weight:780;letter-spacing:.06em;margin:0 0 18px
}
.hero-lead{font-size:17px;line-height:1.85;color:#e7e1d4;max-width:38em;margin-bottom:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px}
.core-deco{
  position:relative;height:420px;pointer-events:none;
  display:flex;align-items:center;justify-content:center
}
.core-deco svg{width:min(420px,100%);height:auto;opacity:.85}
.hero-ctrl{
  position:absolute;z-index:4;left:0;right:0;bottom:22px;
  display:flex;align-items:center;justify-content:space-between;padding:0 24px;max-width:var(--max);margin:0 auto
}
.hero-arrows{display:flex;gap:8px}
.hero-arrows button,.dot{
  width:44px;height:44px;border:1px solid rgba(251,248,241,.3);color:#fff;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;background:rgba(20,25,24,.35)
}
.hero-arrows button:hover,.dot:hover{border-color:#fff;background:rgba(196,92,38,.8)}
.dots{display:flex;gap:8px}
.dot{width:10px;height:10px;border-radius:50%;padding:0;min-width:10px}
.dot.is-on{background:var(--copper);border-color:var(--copper)}

/* Sections common */
main{display:block}
.section{padding:104px 0;position:relative}
.section h2{font-size:30px;line-height:1.25;letter-spacing:.06em;font-weight:760;margin:0 0 14px}
.section .lead{font-size:16px;line-height:1.85;color:var(--steel);max-width:42em;margin-bottom:36px}
.kicker{font-size:12px;letter-spacing:.22em;color:var(--copper);font-weight:700;margin-bottom:10px}
.panel-bg{background:var(--panel)}
.paper-bg{background:var(--paper)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:8px;flex-wrap:wrap}

/* Selling stepper */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px 26px;box-shadow:var(--shadow-sm);min-height:100%
}
.step::after{
  content:"";position:absolute;top:38px;right:-13px;width:26px;height:1px;background:var(--copper);
}
.step:last-child::after{display:none}
.step-no{font-size:13px;letter-spacing:.2em;color:var(--copper);font-weight:700;margin-bottom:8px}
.step h3{font-size:21px;line-height:1.3;margin-bottom:14px}
.step dl{display:grid;gap:12px}
.step dt{font-size:12px;letter-spacing:.16em;color:var(--steel)}
.step dd{margin:0;color:var(--ink)}
.step .metric{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:14px;color:var(--green-deep);font-weight:700}

/* Intro */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.intro-visual{position:relative}
.intro-visual img{width:100%;height:460px;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow)}
.intro-caption{
  position:absolute;left:16px;bottom:16px;background:rgba(20,25,24,.82);color:#fff;
  padding:10px 12px;border-radius:var(--radius-badge);font-size:13px
}
.spec-list{margin:18px 0 0;display:grid;gap:10px}
.spec-list li{
  display:grid;grid-template-columns:96px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:15px
}
.spec-list strong{color:var(--steel);font-weight:650}

/* Scenes */
.scene-board{display:grid;grid-template-columns:280px 1fr;gap:24px;min-height:460px}
.scene-list{display:flex;flex-direction:column;gap:8px}
.scene-btn{
  text-align:left;padding:16px 16px;min-height:72px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--white);color:var(--ink)
}
.scene-btn small{display:block;color:var(--steel);font-size:13px;margin-top:4px}
.scene-btn.is-on,.scene-btn:hover{border-color:var(--copper);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.scene-btn.is-on{background:#fbf3ec}
.scene-stage{
  position:relative;border-radius:var(--radius-card);overflow:hidden;min-height:460px;background:var(--dark)
}
.scene-stage img{width:100%;height:460px;object-fit:cover;filter:saturate(.92)}
.scene-info{
  position:absolute;left:0;right:0;bottom:0;padding:22px 22px 20px;
  background:linear-gradient(180deg,transparent,rgba(16,20,19,.88));color:#fff
}
.scene-info h3{font-size:22px;margin-bottom:8px}
.scene-info p{color:#ddd6c8;max-width:38em}

/* Advantages */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s
}
.adv-card:hover{transform:translateY(-2px);border-color:var(--copper);box-shadow:var(--shadow)}
.adv-card:nth-child(even){margin-top:18px}
.adv-card.wide{grid-column:span 1;background:#f7f1e4;border-color:#d2c7b1}
.adv-card h3{font-size:20px;line-height:1.3;margin:8px 0 10px}
.adv-metric{color:var(--copper);font-weight:750;letter-spacing:.04em}
.adv-card p{color:var(--steel);margin-bottom:8px}
.adv-card .link-text{display:inline-block;margin-top:10px;min-height:44px;line-height:44px}

/* Products */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;padding-top:18px}
.prod-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 0 24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column
}
.prod-card img{height:180px;width:100%;object-fit:cover;border-radius:8px 8px 0 0}
.prod-body{padding:20px 22px 0;display:flex;flex-direction:column;gap:10px;flex:1}
.prod-card h3{font-size:22px}
.prod-fields{display:grid;gap:8px;margin:8px 0 16px}
.prod-fields div{display:grid;grid-template-columns:72px 1fr;gap:8px;font-size:14px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.prod-fields span{color:var(--steel)}
.prod-card .btn{width:100%}
.prod-card.featured{
  transform:translateY(-18px);border:1px solid var(--copper);
  box-shadow:0 16px 32px rgba(28,35,33,.12)
}
.prod-card .flag{
  display:inline-block;align-self:flex-start;background:var(--copper);color:#fff;
  font-size:12px;padding:2px 8px;border-radius:var(--radius-badge);letter-spacing:.12em
}

/* Cases dark */
.cases{padding:96px 0;color:#efe8da;overflow:hidden}
.cases-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.quote{
  font-size:34px;line-height:1.35;font-weight:740;letter-spacing:.04em;max-width:14em
}
.quote cite{display:block;margin-top:18px;font-size:14px;font-style:normal;color:#b7c0ba;letter-spacing:.16em}
.case-points{display:grid;gap:16px}
.case-point{padding:18px 18px 16px;border:1px solid rgba(201,194,179,.25);border-radius:var(--radius-card);background:rgba(255,255,255,.03)}
.case-point h3{font-size:18px;margin-bottom:6px;color:#fff}
.case-point p{color:#c9c2b3;font-size:15px}
.case-point b{color:#e8b08a}

/* Compare */
.compare-wrap{overflow:auto}
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare-table th{background:#dfd8c8;font-weight:750;letter-spacing:.06em}
.compare-table tr:last-child td{border-bottom:0}
.compare-table td:nth-child(3){background:#f4f8f5;font-weight:600}
.compare-mobile{display:none}

/* Stories */
.story-list{display:grid;gap:24px}
.story{
  display:grid;grid-template-columns:320px 1fr;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)
}
.story img{width:100%;height:100%;min-height:240px;object-fit:cover}
.story-body{padding:28px 28px}
.story-body h3{font-size:22px;margin:8px 0 12px}
.story-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.story-body p{margin-bottom:10px;color:var(--ink)}
.beforeafter{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.beforeafter div{background:var(--panel);padding:12px;border-radius:var(--radius-badge);font-size:14px}
.beforeafter strong{display:block;color:var(--steel);font-size:12px;letter-spacing:.12em;margin-bottom:4px}

/* Stats */
.stats{padding:56px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat{padding:8px 8px}
.stat b{display:block;font-size:40px;line-height:1.1;color:#f3c2a3;letter-spacing:.02em}
.stat span{display:block;margin-top:8px;color:#c9c2b3;font-size:14px}

/* Reviews */
.review-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.review{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm)
}
.review.big{padding:32px}
.review.big p{font-size:18px}
.review footer{margin-top:16px;color:var(--steel);font-size:14px}
.review-side{display:grid;gap:16px}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.news-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)}
.news-card img{height:140px;width:100%;object-fit:cover}
.news-card div{padding:16px 16px 18px}
.news-card h3{font-size:17px;line-height:1.4;margin:8px 0}
.news-card p{font-size:14px;color:var(--steel);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-top{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--steel)}

/* FAQ */
.faq-list{display:grid;gap:10px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--white);overflow:hidden}
.faq-q{
  width:100%;text-align:left;min-height:56px;padding:14px 52px 14px 18px;position:relative;
  font-weight:700;color:var(--ink)
}
.faq-q::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--copper);font-size:22px;font-weight:500
}
.faq-item.is-open .faq-q::after{content:"–"}
.faq-a{display:none;padding:0 18px 18px;color:var(--steel);background:#f6f1e6}
.faq-item.is-open .faq-a{display:block}
.faq-item.is-open{border-color:var(--green)}

/* Guarantee */
.guar-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.guar{
  border:1px solid var(--line);background:var(--white);border-radius:var(--radius-card);
  padding:20px 18px;min-width:220px
}
.guar h3{font-size:18px;margin-bottom:8px}
.guar p{font-size:14px;color:var(--steel)}

/* Consult */
.consult{background:var(--panel)}
.consult-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.deliver li{position:relative;padding:10px 0 10px 28px;border-bottom:1px solid var(--line)}
.deliver li::before{content:"";position:absolute;left:0;top:18px;width:10px;height:10px;background:var(--green);border-radius:1px}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:650;letter-spacing:.06em}
.field input,.field select,.field textarea{
  height:48px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--paper);padding:0 12px;color:var(--ink)
}
.field textarea{height:110px;padding:12px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);outline:2px solid rgba(27,138,102,.25);background:#fff}
.field.error input,.field.error select,.field.error textarea{border-color:var(--copper);background:#fdf4ee}
.err{display:none;color:var(--copper);font-size:12px}
.field.error .err{display:block}
.form-note{font-size:13px;color:var(--steel);margin-top:8px}
.form-ok{display:none;margin-top:12px;padding:10px 12px;background:var(--green-soft);color:var(--green-deep);border-radius:var(--radius-badge)}

/* Footer */
.site-footer{background:var(--dark);color:#c9c2b3;padding:64px 0 28px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr .9fr;gap:28px;margin-bottom:36px}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:12px;letter-spacing:.12em}
.site-footer a{color:#d7d0c3}
.site-footer a:hover{color:#fff}
.foot-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:750;letter-spacing:.12em;margin-bottom:12px}
.foot-map a{display:block;min-height:32px;padding:4px 0}
.foot-bottom{border-top:1px solid #2c3431;padding-top:16px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#8b938e}

/* Sticky bar */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:100;
  display:none;align-items:center;justify-content:center;
  min-height:64px;background:var(--ink);color:#fff;
  transform:translateY(110%);transition:transform .28s var(--ease);
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 20px rgba(0,0,0,.2)
}
.sticky-bar.is-show{display:flex;transform:none}
.sticky-inner{width:100%;max-width:var(--max);display:flex;align-items:center;gap:16px}
.sticky-inner p{margin-right:auto;font-size:14px}
.sticky-close{
  width:36px;height:36px;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-btn)
}

/* Responsive */
@media (max-width:1280px){
  .hero h1,.slide-title{font-size:40px}
  .quote{font-size:30px}
}
@media (max-width:1024px){
  .nav-desktop,.header-cta,.header-tools .tool-time,.header-tools .btn-mini,.brand-tagline{display:none}
  .icon-tools,.menu-toggle{display:flex}
  .header-top-inner{justify-content:flex-end}
  .hero-inner{grid-template-columns:1fr;padding:48px 0 96px}
  .core-deco{display:none}
  .step-grid,.adv-grid,.prod-grid,.news-grid,.guar-row,.stats-grid,.cases-grid,.consult-grid,.intro-grid,.scene-board,.review-layout,.foot-grid{
    grid-template-columns:1fr 1fr
  }
  .prod-card.featured{transform:none}
  .adv-card:nth-child(even){margin-top:0}
  .story{grid-template-columns:240px 1fr}
  .section{padding:72px 0}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .hero h1,.slide-title{font-size:30px}
  .section h2{font-size:26px}
  .quote{font-size:24px}
  .step-grid,.adv-grid,.prod-grid,.news-grid,.guar-row,.stats-grid,.cases-grid,.consult-grid,.intro-grid,.scene-board,.review-layout,.foot-grid,.story,.beforeafter{
    grid-template-columns:1fr
  }
  .step::after{display:none}
  .scene-stage,.scene-stage img,.intro-visual img{height:280px;min-height:0}
  .compare-table{display:none}
  .compare-mobile{display:grid;gap:12px}
  .cmp-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:16px}
  .cmp-card h3{font-size:16px;margin-bottom:8px}
  .cmp-card p{font-size:14px;margin:6px 0}
  .guar-scroll{overflow-x:auto;padding-bottom:6px}
  .guar-row{display:flex;width:max-content}
  .guar{width:260px;flex:0 0 260px}
  .sticky-desk{display:none !important}
  .sticky-mob{display:flex;width:100%;gap:8px}
  .sticky-mob .btn{flex:1}
  .header-top{display:none}
  .hero{min-height:calc(100vh - var(--header-main))}
  .stat b{font-size:32px}
  .logo-name{font-size:15px;letter-spacing:.06em}
  .section{padding:60px 0}
  .hero-lead{font-size:16px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1,.slide-title{font-size:26px}
  .btn{width:100%}
  .hero-actions .btn{width:auto;flex:1}
  .header-main-inner{gap:8px}
  .news-card img,.prod-card img{height:160px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}