/* ══════════════════════════════════════════════════════════
   蜀道山（重庆）旅游发展有限公司  sdstrip.com
   青绿山水 · 编辑式排版 · 零外部依赖
   ══════════════════════════════════════════════════════════ */

:root{
  --ink:      #0b1917;
  --ink-2:    #0f2422;
  --ink-3:    #143029;
  --jade:     #2f6f5e;
  --jade-lt:  #58ab95;
  --jade-dim: #7fbfad;
  --cinnabar: #c9563c;
  --gold:     #b8924a;
  --paper:    #f8f5ef;
  --paper-2:  #efeae0;
  --paper-3:  #e4ddd0;
  --text:     #17211f;
  --text-2:   #4d5a57;
  --text-3:   #78837f;
  --on-dark:  #e8f0ed;
  --on-dark-2:#9db5ae;

  --serif: "Songti SC","STSong","Source Han Serif SC","Noto Serif SC","SimSun",Georgia,"Times New Roman",serif;
  --sans:  "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --wrap: 1200px;
  --pad: 24px;
  --r: 4px;
  --ease: cubic-bezier(.22,.68,.28,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--paper); color:var(--text);
  font-family:var(--sans); font-size:16px; line-height:1.75;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:200}
.skip:focus{left:12px;top:12px}

:focus-visible{outline:2px solid var(--jade-lt);outline-offset:3px;border-radius:2px}

/* ─────────── 按钮 ─────────── */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:15px 30px;border:1px solid var(--jade);
  background:var(--jade);color:#fff;
  font-size:15px;font-weight:500;letter-spacing:.04em;
  border-radius:var(--r);cursor:pointer;
  transition:background .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease),color .3s var(--ease);
}
.btn:hover{background:var(--ink-3);border-color:var(--ink-3);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--jade);border-color:rgba(47,111,94,.4)}
.btn-ghost:hover{background:var(--jade);border-color:var(--jade);color:#fff}
.btn-sm{padding:10px 22px;font-size:14px}
.hero .btn-ghost{color:var(--jade-dim);border-color:rgba(127,191,173,.38)}
.hero .btn-ghost:hover{background:var(--jade-dim);color:var(--ink);border-color:var(--jade-dim)}
.sec-dark .btn-ghost{color:var(--jade-dim);border-color:rgba(127,191,173,.35)}
.sec-dark .btn-ghost:hover{background:var(--jade-dim);color:var(--ink);border-color:var(--jade-dim)}

/* ─────────── 导航 ─────────── */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.solid{background:rgba(248,245,239,.92);backdrop-filter:saturate(1.6) blur(14px);
  -webkit-backdrop-filter:saturate(1.6) blur(14px);
  border-bottom-color:rgba(23,33,31,.09);box-shadow:0 1px 24px rgba(11,25,23,.05)}
.nav-in{display:flex;align-items:center;gap:32px;height:76px}

.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:121px;height:47px;flex-shrink:0;display:block}
.bm-let{fill:var(--on-dark);transition:fill .25s}
.bm-jet{fill:var(--cinnabar)}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-family:var(--serif);font-size:21px;font-weight:600;letter-spacing:.14em;color:var(--on-dark)}
.brand-txt i{font-style:normal;font-size:9px;letter-spacing:.2em;color:var(--on-dark-2);margin-top:2px}
.nav.solid .brand-txt b{color:var(--ink)}
.nav.solid .brand-txt i{color:var(--text-3)}
.nav.solid .bm-let{fill:var(--ink)}

.nav-links{display:flex;gap:30px;margin-left:auto;font-size:15px}
.nav-links a{color:var(--on-dark);opacity:.86;position:relative;padding:6px 0;transition:opacity .25s,color .25s}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--cinnabar);
  transition:right .35s var(--ease)}
.nav-links a:hover{opacity:1}
.nav-links a:hover::after{right:0}
.nav.solid .nav-links a{color:var(--text-2)}
.nav.solid .nav-links a:hover{color:var(--ink)}
.nav .btn-sm{flex-shrink:0}
.nav:not(.solid) .btn-sm{background:transparent;border-color:rgba(232,240,237,.4);color:var(--on-dark)}
.nav:not(.solid) .btn-sm:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark)}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:10px;cursor:pointer;margin-left:auto}
.burger span{display:block;width:22px;height:1.5px;background:var(--on-dark);transition:transform .3s var(--ease),opacity .25s}
.nav.solid .burger span{background:var(--ink)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.mmenu[hidden]{display:none}
.mmenu{position:fixed;top:76px;left:0;right:0;z-index:99;background:rgba(248,245,239,.98);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(23,33,31,.09);padding:8px var(--pad) 20px;
  display:flex;flex-direction:column}
.mmenu a{padding:15px 4px;border-bottom:1px solid rgba(23,33,31,.07);font-size:16px;color:var(--text)}
.mmenu a:last-child{border-bottom:0}

/* ─────────── 首屏 ─────────── */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;
  background:linear-gradient(175deg,#08100f 0%,#0b1917 42%,#102a26 100%);
  overflow:hidden;isolation:isolate}
.hero-sky{position:absolute;inset:0;z-index:0}
.sun{position:absolute;right:12%;top:16%;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,160,90,.22) 0%,rgba(200,160,90,.07) 45%,transparent 70%);
  filter:blur(6px)}
.mist{position:absolute;left:-10%;right:-10%;height:190px;
  background:linear-gradient(90deg,transparent,rgba(140,190,178,.055) 30%,rgba(140,190,178,.085) 55%,transparent);
  filter:blur(26px)}
.m1{top:44%;animation:drift 34s linear infinite}
.m2{top:60%;animation:drift 48s linear infinite reverse;opacity:.7}
@keyframes drift{from{transform:translateX(-7%)}to{transform:translateX(7%)}}

.ridges{position:absolute;left:0;right:0;bottom:0;width:100%;height:66vh;min-height:380px;z-index:1;display:block}
.ridge{transition:transform .18s linear}
.arc{stroke:rgba(201,86,60,.5)}
.plane-dot{fill:var(--cinnabar)}
.plane-halo{fill:rgba(201,86,60,.22)}
.plank{stroke:rgba(184,146,74,.32)}

.hero::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:
    linear-gradient(102deg,rgba(8,16,15,.88) 0%,rgba(8,16,15,.66) 34%,rgba(8,16,15,.20) 62%,rgba(8,16,15,0) 86%),
    linear-gradient(to top,rgba(11,25,23,.92) 0%,rgba(11,25,23,.34) 12%,rgba(11,25,23,0) 26%);
}
.hero-in{position:relative;z-index:3;padding:120px 24px 170px;max-width:1080px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--jade-dim);
  font-size:12px;letter-spacing:.26em;margin-bottom:30px;text-transform:uppercase}
.eyebrow .dot{width:5px;height:5px;border-radius:50%;background:var(--cinnabar);
  box-shadow:0 0 0 4px rgba(201,86,60,.16);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(201,86,60,.16)}50%{box-shadow:0 0 0 8px rgba(201,86,60,.05)}}

.hero h1{display:flex;flex-direction:column;gap:.18em;margin-bottom:34px}
.hero h1 .l1{font-size:clamp(30px,5.4vw,62px);color:var(--on-dark);letter-spacing:.05em;font-weight:500;opacity:.92}
.hero h1 .l2{font-size:clamp(34px,6.4vw,76px);color:#fff;letter-spacing:.04em;font-weight:600}
.hero h1 em{font-style:normal;color:var(--cinnabar);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:-.14em;height:2px;
  background:linear-gradient(90deg,var(--cinnabar),transparent);transform-origin:left;
  animation:swipe 1.1s var(--ease) .8s both}
@keyframes swipe{from{transform:scaleX(0)}to{transform:scaleX(1)}}

.lead{max-width:660px;color:var(--on-dark-2);font-size:clamp(15px,1.5vw,17.5px);line-height:2}
.lead b{color:var(--on-dark);font-weight:500}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}

.hero-in>*{opacity:0;transform:translateY(20px);animation:rise .95s var(--ease) forwards}
.hero-in>*:nth-child(1){animation-delay:.12s}
.hero-in>*:nth-child(2){animation-delay:.24s}
.hero-in>*:nth-child(3){animation-delay:.38s}
.hero-in>*:nth-child(4){animation-delay:.52s}
@keyframes rise{to{opacity:1;transform:none}}

.scroll-hint{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);z-index:4;
  width:24px;height:40px;border:1px solid rgba(157,181,174,.35);border-radius:14px;
  display:flex;justify-content:center;padding-top:8px}
.scroll-hint span{width:3px;height:7px;border-radius:2px;background:var(--jade-dim);
  animation:sc 1.9s var(--ease) infinite}
@keyframes sc{0%{opacity:0;transform:translateY(0)}30%{opacity:1}75%{opacity:0;transform:translateY(13px)}100%{opacity:0}}

/* ─────────── 数据条 ─────────── */
.stats{background:var(--ink-2);border-top:1px solid rgba(127,191,173,.12);padding:56px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:12%;bottom:12%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(127,191,173,.22),transparent)}
.stat b{display:block;font-family:var(--serif);font-size:clamp(32px,4.2vw,50px);
  font-weight:600;color:var(--jade-dim);line-height:1.15;letter-spacing:.02em}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--on-dark-2);letter-spacing:.09em}

.trust{list-style:none;display:flex;justify-content:center;flex-wrap:wrap;gap:10px 34px;
  margin:40px auto 0;padding-top:26px;border-top:1px solid rgba(127,191,173,.12);
  font-size:13px;letter-spacing:.08em;color:var(--on-dark-2)}
.trust li{display:inline-flex;align-items:center;gap:8px}
.trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--jade-dim);
  box-shadow:0 0 0 3px rgba(88,171,149,.14)}

/* ─────────── 通用区块 ─────────── */
.sec{padding:118px 0;position:relative}
.sec-paper2{background:var(--paper-2)}
.sec-dark{background:var(--ink);color:var(--on-dark)}
.sec-dark h2,.sec-dark h3,.sec-dark h4{color:#fff}

.sec-head{max-width:760px;margin-bottom:64px}
.kicker{font-size:11.5px;letter-spacing:.28em;color:var(--jade);margin-bottom:18px;
  display:flex;align-items:center;gap:12px}
.kicker::before{content:"";width:26px;height:1px;background:var(--cinnabar);flex-shrink:0}
.sec-dark .kicker{color:var(--jade-dim)}
.sec-head h2{font-size:clamp(27px,3.7vw,42px);letter-spacing:.03em;margin-bottom:18px}
.sub{color:var(--text-2);font-size:16.5px;line-height:1.95;max-width:640px}
.sec-dark .sub{color:var(--on-dark-2)}

/* ─────────── 核心业务 ─────────── */
.biz{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.biz-card{position:relative;background:#fff;border:1px solid rgba(23,33,31,.09);
  border-radius:var(--r);padding:46px 42px 44px;overflow:hidden;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease)}
.biz-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--jade),var(--cinnabar));
  transform:scaleY(0);transform-origin:top;transition:transform .55s var(--ease)}
.biz-card:hover{transform:translateY(-6px);box-shadow:0 22px 60px -22px rgba(11,25,23,.24);
  border-color:rgba(47,111,94,.25)}
.biz-card:hover::before{transform:scaleY(1)}
.biz-no{position:absolute;right:34px;top:28px;font-family:var(--serif);font-size:62px;
  color:rgba(47,111,94,.07);font-weight:600;line-height:1}
.biz-ico{width:48px;height:48px;margin-bottom:22px}
.biz-ico .ico-fill{fill:var(--jade)}
.biz-ico .ico-line{stroke:var(--jade)}
.biz-ico .ico-accent{stroke:var(--cinnabar)}
.biz-ico .ico-accent-fill{fill:var(--cinnabar)}
.biz-card h3{font-size:26px;letter-spacing:.05em;margin-bottom:12px}
.biz-lead{color:var(--text-2);font-size:15.5px;margin-bottom:26px;padding-bottom:24px;
  border-bottom:1px solid rgba(23,33,31,.08)}
.biz-card ul li{position:relative;padding-left:22px;margin-bottom:15px;
  color:var(--text-2);font-size:15px;line-height:1.85}
.biz-card ul li:last-child{margin-bottom:0}
.biz-card ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:1px;border:1px solid var(--jade);transform:rotate(45deg)}
.biz-card ul li b{color:var(--text);font-weight:600}

/* ─────────── 服务能力 ─────────── */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(127,191,173,.14)}
.cap{background:var(--ink);padding:42px 34px;transition:background .4s var(--ease)}
.cap:hover{background:var(--ink-3)}
.cap-n{font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--cinnabar);
  display:block;margin-bottom:16px}
.cap h4{font-size:19.5px;letter-spacing:.04em;margin-bottom:12px}
.cap p{color:var(--on-dark-2);font-size:14.8px;line-height:1.9}

/* ─────────── 场景 ─────────── */
.scn-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scn{padding:36px 30px 32px;border-top:2px solid var(--jade);background:var(--paper-2);
  border-radius:0 0 var(--r) var(--r);transition:transform .4s var(--ease),background .4s var(--ease)}
.scn:hover{transform:translateY(-5px);background:#fff}
.scn h4{font-size:20px;letter-spacing:.04em;margin-bottom:14px}
.scn p{color:var(--text-2);font-size:14.8px;line-height:1.9}
.scn-tag{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(23,33,31,.14);
  font-size:12.5px;color:var(--jade);letter-spacing:.06em}

/* ─────────── 流程 ─────────── */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:f}
.flow li{position:relative;padding-top:34px}
.flow li::before{content:"";position:absolute;left:0;right:-26px;top:8px;height:1px;
  background:repeating-linear-gradient(90deg,rgba(47,111,94,.32) 0 5px,transparent 5px 11px)}
.flow li:last-child::before{right:0}
.flow li::after{content:"";position:absolute;left:0;top:4px;width:9px;height:9px;
  border-radius:50%;background:var(--paper-2);border:2px solid var(--jade)}
.flow li span{font-family:var(--serif);font-size:12.5px;letter-spacing:.16em;color:var(--cinnabar);
  display:block;margin-bottom:9px}
.flow li h4{font-size:19px;letter-spacing:.04em;margin-bottom:10px}
.flow li p{color:var(--text-2);font-size:14.6px;line-height:1.9}

/* ─────────── 关于 ─────────── */
.about-in{display:grid;grid-template-columns:1fr 1.02fr;gap:70px;align-items:start}
.about-txt h2{font-size:clamp(27px,3.7vw,42px);margin-bottom:26px;letter-spacing:.03em}
.about-txt p{color:var(--text-2);font-size:16px;line-height:2.05;margin-bottom:20px}
.about-txt p b{color:var(--text);font-weight:600}
.about-txt .btn{margin-top:12px}

.about-card{background:#fff;border:1px solid rgba(23,33,31,.09);border-radius:var(--r);padding:38px 36px}
.about-card h3{font-size:18px;letter-spacing:.09em;color:var(--jade);margin-bottom:24px;
  padding-bottom:16px;border-bottom:1px solid rgba(23,33,31,.09)}
.reg div{display:grid;grid-template-columns:96px 1fr;gap:16px;padding:11px 0;
  border-bottom:1px solid rgba(23,33,31,.055);align-items:baseline}
.reg div:last-child{border-bottom:0}
.reg dt{color:var(--text-3);font-size:13.5px;margin:0}
.reg dd{margin:0;font-size:14.5px;color:var(--text);line-height:1.7}
.reg .mono{font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  font-size:13.5px;letter-spacing:.04em;color:var(--text)}
.pill{display:inline-block;padding:2px 11px;background:rgba(47,111,94,.1);color:var(--jade);
  border-radius:999px;font-size:12.5px;letter-spacing:.05em}
.scope{margin-top:22px;padding-top:18px;border-top:1px solid rgba(23,33,31,.09);
  font-size:13.2px;color:var(--text-3);line-height:1.95}
.scope summary{cursor:pointer;color:var(--text-2);font-size:13.5px;letter-spacing:.04em;
  list-style:none;display:flex;align-items:center;gap:8px;user-select:none}
.scope summary::-webkit-details-marker{display:none}
.scope summary::before{content:"";width:7px;height:7px;border-right:1.5px solid var(--jade);
  border-bottom:1.5px solid var(--jade);transform:rotate(-45deg);transition:transform .25s var(--ease);margin-left:2px}
.scope[open] summary::before{transform:rotate(45deg)}
.scope p{margin-top:12px}

/* ─────────── 常见问题 ─────────── */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:34px 56px;margin:0}
.faq div{padding-left:22px;border-left:2px solid rgba(47,111,94,.28)}
.faq dt{font-family:var(--serif);font-size:18.5px;font-weight:600;letter-spacing:.03em;
  color:var(--text);margin-bottom:9px;line-height:1.5}
.faq dd{margin:0;color:var(--text-2);font-size:15px;line-height:1.9}

/* ─────────── 联系 ─────────── */
.ct-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ct{padding:34px 30px;border:1px solid rgba(127,191,173,.16);border-radius:var(--r);
  display:flex;flex-direction:column;gap:9px;transition:border-color .4s var(--ease),background .4s var(--ease)}
.ct:hover{border-color:rgba(127,191,173,.4);background:rgba(127,191,173,.04)}
.ct-k{font-size:12px;letter-spacing:.2em;color:var(--jade-dim)}
.ct-v{font-family:var(--serif);font-size:21px;color:#fff;letter-spacing:.03em;line-height:1.5}
a.ct-v{transition:color .25s}
a.ct-v:hover{color:var(--jade-dim)}
.ct-addr{font-size:16.5px;line-height:1.75}
.ct-copy{
  appearance:none;background:none;border:0;padding:0;margin:0;cursor:pointer;
  font-family:var(--serif);text-align:left;display:inline-flex;align-items:baseline;gap:10px;
  transition:color .25s;
}
.ct-copy:hover{color:var(--jade-dim)}
.ct-copy .cp{
  font-family:var(--sans);font-size:11px;letter-spacing:.12em;color:var(--on-dark-2);
  border:1px solid rgba(127,191,173,.3);border-radius:3px;padding:2px 7px;
  transition:color .25s,border-color .25s,background .25s;flex-shrink:0;
}
.ct-copy:hover .cp{color:var(--ink);background:var(--jade-dim);border-color:var(--jade-dim)}
.ct-copy.done .cp{color:var(--ink);background:var(--jade-dim);border-color:var(--jade-dim)}
.ct-note{font-size:13px;color:var(--on-dark-2);margin-top:auto;padding-top:6px}

/* ─────────── 页脚 ─────────── */
.foot{background:#081311;color:var(--on-dark-2);padding:62px 0 26px;
  border-top:1px solid rgba(127,191,173,.1)}
.foot-in{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap;
  padding-bottom:34px;border-bottom:1px solid rgba(127,191,173,.1)}
.foot-brand{display:flex;gap:14px;align-items:center}
.foot-brand .brand-mark{width:129px;height:50px}
.foot-brand b{display:block;font-family:var(--serif);font-size:16.5px;color:var(--on-dark);
  letter-spacing:.05em;font-weight:600}
.foot-brand i{display:block;font-style:normal;font-size:10px;letter-spacing:.13em;
  color:rgba(157,181,174,.6);margin-top:5px}
.foot-slogan{display:inline-block;margin-top:9px;font-family:var(--serif);
  font-size:12.5px;letter-spacing:.34em;color:var(--jade-dim);opacity:.8}
.foot-nav{display:flex;gap:26px;flex-wrap:wrap;font-size:14px}
.foot-nav a{transition:color .25s}
.foot-nav a:hover{color:var(--jade-dim)}
.foot-btm{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding-top:24px;font-size:12.5px;color:rgba(157,181,174,.62)}

/* ─────────── 滚动进场 ─────────── */
.reveal{opacity:0;transform:translateY(26px);
  transition:opacity .85s var(--ease),transform .85s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ─────────── 响应式 ─────────── */
@media (max-width:1040px){
  .biz{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .scn-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:34px 26px}
  .flow li:nth-child(2)::before{right:0}
  .about-in{grid-template-columns:1fr;gap:46px}
  .faq{grid-template-columns:1fr;gap:28px}
  .ct-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:820px){
  .nav-links,.nav .btn-sm{display:none}
  .burger{display:flex}
  .sec{padding:76px 0}
  .sec-head{margin-bottom:44px}
  .hero-in{padding:110px 24px 140px}
  .stats{padding:38px 0}
  .trust{margin-top:28px;padding-top:20px;gap:8px 18px;font-size:12px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .stat:nth-child(3)::before{display:none}
  .biz-card{padding:36px 28px}
  .biz-no{font-size:48px;right:24px;top:22px}
  .cap-grid{grid-template-columns:1fr}
  .scn-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr;gap:30px}
  .flow li::before{right:0}
  .about-card{padding:30px 24px}
  .reg div{grid-template-columns:82px 1fr;gap:12px}
  .ct-grid{grid-template-columns:1fr}
  .foot-in{flex-direction:column;gap:28px}
}
@media (max-width:420px){
  :root{--pad:20px}
  .hero h1 .l1{letter-spacing:.02em}
  .brand-txt b{font-size:19px;letter-spacing:.1em}
  .reg div{grid-template-columns:1fr;gap:2px}
  .reg dt{font-size:12.5px}
}

@media (max-height:720px){
  .ridges{height:56vh;min-height:300px}
  .hero-in{padding-top:100px;padding-bottom:104px}
  .sun{width:130px;height:130px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero-in>*{opacity:1;transform:none}
}

@media print{
  .nav,.mmenu,.scroll-hint,.ridges,.hero-sky{display:none}
  body{background:#fff;color:#000}
  .sec{padding:24px 0}
}