:root{
  --bg:#f3efe8;
  --bg-soft:#ebe6dd;
  --paper:#fbfaf7;
  --ink:#17191c;
  --muted:#676a70;
  --line:rgba(23,25,28,.15);
  --line-strong:rgba(23,25,28,.28);
  --accent:#283747;
  --accent-soft:#dce2e7;
  --dark:#1a2027;
  --dark-2:#222a33;
  --white:#fff;
  --radius:22px;
  --shadow:0 26px 70px rgba(23,25,28,.08);
  --container:1240px;
  --gutter:clamp(20px,4vw,52px);
  --section:clamp(88px,10vw,150px);
  --display:clamp(48px,6.6vw,94px);
  --h1:clamp(46px,5.5vw,76px);
  --h2:clamp(36px,4.1vw,58px);
  --h3:clamp(24px,2.2vw,34px);
  --body-lg:clamp(19px,1.55vw,24px);
  --body:clamp(16px,1.1vw,18px);
  --small:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;color:var(--ink);background:var(--bg);font-family:Inter,Arial,Helvetica,sans-serif;font-size:var(--body);line-height:1.58;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button{color:inherit}
::selection{background:var(--accent);color:#fff}
.container{width:min(var(--container),calc(100% - 2 * var(--gutter)));margin:0 auto}
.narrow{width:min(860px,100%)}
.kicker{margin:0 0 20px;font-size:12px;line-height:1.2;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.kicker.light{color:rgba(255,255,255,.6)}
.lead{font-size:var(--body-lg);line-height:1.48;color:#363a40;max-width:820px}
.lead.light{color:rgba(255,255,255,.77)}
.skip-link{position:fixed;left:16px;top:-100px;z-index:1000;background:#fff;padding:10px 14px;border-radius:8px;box-shadow:var(--shadow)}
.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:80;background:rgba(243,239,232,.88);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s ease}
.site-header.scrolled{border-color:var(--line)}
.navbar{height:82px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:baseline;gap:12px;font-size:15px;font-weight:760;letter-spacing:.01em;white-space:nowrap}
.brand span{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:650}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px}
.nav-links>a:not(.nav-cta){color:#34373d;position:relative}
.nav-links>a:not(.nav-cta):after{content:"";position:absolute;left:0;bottom:-7px;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:.2s ease}
.nav-links>a:not(.nav-cta):hover:after,.nav-links>a[aria-current="page"]:after{transform:scaleX(1)}
.nav-cta{padding:12px 18px;border:1px solid var(--ink);border-radius:999px;font-weight:650;transition:.2s ease}
.nav-cta:hover{background:var(--ink);color:#fff}
.menu-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.menu-toggle span{display:block;width:24px;height:1.5px;background:var(--ink);margin:6px 0;transition:.2s ease}
.hero{padding:clamp(40px,5vw,72px) 0 clamp(84px,8vw,118px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(360px,.72fr);gap:clamp(42px,7vw,94px);align-items:center}
.hero-copy{padding-top:8px}
.hero-identity{display:flex;align-items:center;gap:14px;margin-bottom:32px;color:var(--muted);font-size:13px;letter-spacing:.08em;text-transform:uppercase;font-weight:700}
.hero-identity i{display:block;width:54px;height:1px;background:var(--line-strong)}
.hero h1{font-size:var(--display);line-height:.98;letter-spacing:-.052em;margin:0 0 30px;max-width:900px;font-weight:680}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-intro{font-size:clamp(20px,1.75vw,27px);line-height:1.43;max-width:760px;margin:0;color:#34383e}
.hero-detail{font-size:16px;line-height:1.58;max-width:700px;margin:22px 0 0;color:var(--muted)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;font-size:14px;color:#474b51}
.hero-meta span{display:flex;align-items:center;gap:9px}
.hero-meta span:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;border-radius:999px;border:1px solid var(--line-strong);font-size:15px;font-weight:700;transition:.2s ease;background:transparent}
.btn:hover{transform:translateY(-1px);border-color:var(--ink)}
.btn-primary{background:var(--ink);border-color:var(--ink);color:#fff;padding-inline:25px}
.btn-primary:hover{background:var(--accent);border-color:var(--accent)}
.btn-light{background:#fff;color:var(--dark);border-color:#fff}
.hero-visual{position:relative}
.hero-photo-shell{position:relative;border-radius:32px;overflow:hidden;background:#d8d8d5;box-shadow:var(--shadow);aspect-ratio:.79}
.hero-photo-shell:after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);border-radius:inherit;pointer-events:none}
.hero-photo-shell img{width:100%;height:100%;object-fit:cover;object-position:50% 42%}
.hero-fact{position:absolute;left:-34px;bottom:40px;background:rgba(251,250,247,.94);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:0 18px 46px rgba(23,25,28,.08);max-width:240px}
.hero-fact strong{display:block;font-size:34px;line-height:1;letter-spacing:-.04em;margin-bottom:7px}
.hero-fact span{font-size:13px;line-height:1.35;color:var(--muted)}
.section{padding:var(--section) 0;border-top:1px solid var(--line)}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--dark);color:#fff;border-top:0}
.section-head{display:grid;grid-template-columns:260px minmax(0,1fr);gap:clamp(36px,6vw,90px);align-items:start;margin-bottom:clamp(52px,7vw,94px)}
.section-head h2{font-size:var(--h2);line-height:1.05;letter-spacing:-.042em;margin:0 0 24px;font-weight:670;max-width:850px}
.section-head p{margin:0}
.section-index{font-size:12px;text-transform:uppercase;letter-spacing:.14em;font-weight:700;color:var(--muted);padding-top:8px}
.dark .section-index{color:rgba(255,255,255,.48)}
.problem-list{border-top:1px solid var(--line)}
.problem{display:grid;grid-template-columns:70px minmax(280px,.75fr) minmax(360px,1.2fr);gap:30px;padding:31px 0;border-bottom:1px solid var(--line);align-items:start}
.problem-num{font-size:12px;font-weight:700;color:var(--muted);padding-top:7px}
.problem h3{font-size:clamp(22px,2vw,30px);line-height:1.16;letter-spacing:-.025em;margin:0;font-weight:650}
.problem p{margin:0;color:#5d6167;max-width:720px}
.execution-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid rgba(255,255,255,.18);border-left:1px solid rgba(255,255,255,.18)}
.execution-step{min-height:270px;padding:30px 24px;border-right:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18);display:flex;flex-direction:column;justify-content:space-between}
.execution-step span{font-size:12px;letter-spacing:.12em;color:rgba(255,255,255,.42);font-weight:700}
.execution-step h3{font-size:25px;line-height:1.12;margin:40px 0 10px;letter-spacing:-.02em;font-weight:620}
.execution-step p{margin:0;color:rgba(255,255,255,.63);font-size:15px;line-height:1.5}
.execution-note{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;margin-top:58px;padding-top:44px;border-top:1px solid rgba(255,255,255,.18)}
.execution-note h3{font-size:clamp(26px,2.4vw,36px);line-height:1.15;margin:0;font-weight:620;letter-spacing:-.025em}
.execution-note p{margin:0;color:rgba(255,255,255,.7);font-size:18px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:54px}
.metric{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:26px 24px;min-height:170px;display:flex;flex-direction:column;justify-content:space-between}
.metric strong{font-size:clamp(36px,4vw,58px);line-height:.95;letter-spacing:-.05em;font-weight:670}
.metric span{font-size:13px;line-height:1.4;color:var(--muted);max-width:170px}
.case-list{border-top:1px solid var(--line)}
.case-link{display:grid;grid-template-columns:70px minmax(0,1.5fr) minmax(190px,.6fr) 36px;gap:28px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line);transition:.22s ease}
.case-link:hover{padding-left:8px}
.case-link .case-num{font-size:12px;font-weight:700;color:var(--muted)}
.case-link h3{font-size:clamp(23px,2.2vw,32px);line-height:1.14;margin:0 0 6px;font-weight:630;letter-spacing:-.025em}
.case-link p{margin:0;color:var(--muted);font-size:14px}
.case-link .case-tag{font-size:13px;line-height:1.4;color:#4c5057}
.case-link .arrow{width:34px;height:34px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:18px;transition:.2s ease}
.case-link:hover .arrow{background:var(--ink);color:#fff}
.formats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.format-card{border:1px solid var(--line);border-radius:18px;padding:28px;min-height:290px;background:rgba(251,250,247,.6);display:flex;flex-direction:column}
.format-card .num{font-size:12px;font-weight:700;color:var(--muted);margin-bottom:38px}
.format-card h3{font-size:26px;line-height:1.15;letter-spacing:-.025em;margin:0 0 16px;font-weight:630}
.format-card p{margin:0;color:var(--muted);font-size:15px}
.format-card a{margin-top:auto;padding-top:24px;font-size:14px;font-weight:700}
.benefits-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.benefit{padding:34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:250px}
.benefit h3{font-size:25px;line-height:1.18;margin:0 0 16px;font-weight:630;letter-spacing:-.02em}
.benefit p{margin:0;color:var(--muted);font-size:15px;max-width:520px}
.principles{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid rgba(255,255,255,.18);border-left:1px solid rgba(255,255,255,.18)}
.principle{padding:30px 24px;border-right:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18);min-height:300px}
.principle .num{font-size:12px;color:rgba(255,255,255,.44);font-weight:700}
.principle h3{font-size:23px;line-height:1.17;margin:52px 0 15px;font-weight:620;letter-spacing:-.02em}
.principle p{margin:0;font-size:14px;line-height:1.5;color:rgba(255,255,255,.65)}
.about-preview{display:grid;grid-template-columns:minmax(340px,.72fr) minmax(0,1.2fr);gap:clamp(44px,7vw,90px);align-items:center}
.about-photo{border-radius:26px;overflow:hidden;aspect-ratio:.82;background:#ddd;box-shadow:var(--shadow)}
.about-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.about-copy h2{font-size:var(--h2);line-height:1.05;letter-spacing:-.042em;margin:0 0 26px;font-weight:670}
.about-copy p{font-size:18px;color:#51555b;margin:0 0 18px;max-width:760px}
.about-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:34px}
.about-fact{border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--muted)}
.about-fact strong{display:block;font-size:16px;color:var(--ink);margin-bottom:5px}
.cta-band{padding:clamp(76px,9vw,132px) 0;background:var(--accent);color:#fff}
.cta-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(50px,8vw,110px);align-items:end}
.cta-layout h2{font-size:clamp(42px,5vw,70px);line-height:1.02;letter-spacing:-.045em;margin:0 0 22px;font-weight:650}
.cta-layout p{font-size:18px;line-height:1.55;color:rgba(255,255,255,.74);margin:0;max-width:720px}
.contact-quick{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.contact-quick a{font-size:18px;border-bottom:1px solid rgba(255,255,255,.4);padding:8px 0}
.site-footer{padding:34px 0 46px;border-top:1px solid var(--line);background:var(--bg)}
.footer-grid{display:flex;justify-content:space-between;gap:24px;align-items:flex-end}
.footer-brand{font-size:16px;font-weight:750;margin-bottom:6px}
.footer-meta{font-size:12px;color:var(--muted)}
.footer-links{display:flex;gap:22px;font-size:13px;color:#4c5057}
.page-hero{padding:clamp(72px,8vw,118px) 0 clamp(66px,7vw,104px);border-bottom:1px solid var(--line)}
.page-hero-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(36px,7vw,96px)}
.page-hero h1{font-size:var(--h1);line-height:1.02;letter-spacing:-.046em;margin:0 0 25px;font-weight:670;max-width:980px}
.page-hero p{font-size:var(--body-lg);color:#555a61;max-width:800px;margin:0}
.case-hero{padding-bottom:54px}
.case-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.case-meta span{border:1px solid var(--line);border-radius:999px;padding:9px 12px;font-size:12px;color:#555a61;background:rgba(255,255,255,.25)}
.case-body{padding:clamp(70px,8vw,115px) 0}
.case-layout{display:grid;grid-template-columns:260px minmax(0,780px);gap:clamp(42px,8vw,105px);align-items:start}
.case-toc{position:sticky;top:115px;font-size:13px;color:var(--muted)}
.case-toc a{display:block;padding:8px 0;border-bottom:1px solid var(--line)}
.case-content section{padding:0 0 58px;margin:0 0 58px;border-bottom:1px solid var(--line)}
.case-content section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.case-content h2{font-size:clamp(30px,3vw,42px);line-height:1.12;letter-spacing:-.035em;margin:0 0 22px;font-weight:650}
.case-content h3{font-size:22px;line-height:1.25;margin:30px 0 14px;font-weight:650}
.case-content p{font-size:18px;line-height:1.66;color:#4f545a;margin:0 0 18px}
.case-content ul{margin:20px 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.case-content li{padding:13px 0 13px 22px;border-bottom:1px solid var(--line);position:relative;color:#3f444a}
.case-content li:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);position:absolute;left:0;top:23px}
.case-callout{background:var(--dark);color:#fff;border-radius:22px;padding:32px;margin:28px 0 0}
.case-callout strong{display:block;font-size:clamp(35px,4vw,56px);line-height:1;letter-spacing:-.045em;margin-bottom:12px}
.case-callout p{color:rgba(255,255,255,.68);margin:0;font-size:16px}
.flow{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.flow span{display:inline-flex;align-items:center;min-height:39px;padding:0 13px;border:1px solid var(--line);border-radius:999px;font-size:13px;background:var(--paper)}
.flow i{font-style:normal;color:var(--muted);padding:0 1px}
.page-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.page-card{border:1px solid var(--line);border-radius:18px;padding:30px;background:rgba(251,250,247,.55)}
.page-card h2,.page-card h3{margin:0 0 16px;font-size:27px;line-height:1.16;letter-spacing:-.025em;font-weight:630}
.page-card p{margin:0;color:var(--muted)}
.page-card ul{list-style:none;padding:0;margin:20px 0 0;border-top:1px solid var(--line)}
.page-card li{padding:10px 0;border-bottom:1px solid var(--line);font-size:15px;color:#4f545a}
.prose{max-width:880px}
.prose h2{font-size:clamp(31px,3.2vw,45px);line-height:1.12;letter-spacing:-.034em;margin:70px 0 24px;font-weight:650}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:24px;margin:34px 0 14px;font-weight:650}
.prose p{font-size:18px;line-height:1.68;color:#4f545a;margin:0 0 20px}
.prose ul{margin:20px 0 28px;padding-left:20px;color:#4f545a}
.contact-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:clamp(42px,7vw,90px);align-items:start}
.contact-list{border-top:1px solid var(--line)}
.contact-item{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-item span{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:700;padding-top:4px}
.contact-item a,.contact-item strong{font-size:20px;font-weight:550;word-break:break-word}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:clamp(24px,4vw,42px);box-shadow:var(--shadow)}
.form-card h2{font-size:32px;line-height:1.13;margin:0 0 10px;letter-spacing:-.03em}
.form-card>p{margin:0 0 28px;color:var(--muted)}
.field{display:grid;gap:7px;margin-bottom:16px}
.field label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.field input,.field textarea{width:100%;border:1px solid var(--line-strong);border-radius:12px;background:#fff;padding:14px 15px;outline:none;transition:.2s ease}
.field input:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(40,55,71,.08)}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:12px;color:var(--muted);margin-top:13px}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .65s ease,transform .65s ease}
.reveal.visible{opacity:1;transform:none}
@media (max-width:1050px){
  .nav-links{gap:17px}.nav-links>a:not(.nav-cta){display:none}
  .hero-grid{grid-template-columns:1fr .72fr;gap:42px}.hero h1{font-size:clamp(48px,6.8vw,72px)}
  .hero-fact{left:-20px;bottom:28px}
  .section-head{grid-template-columns:190px 1fr;gap:40px}
  .problem{grid-template-columns:50px .9fr 1.15fr}
  .execution-grid{grid-template-columns:repeat(3,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .formats-grid{grid-template-columns:repeat(2,1fr)}
  .principles{grid-template-columns:repeat(3,1fr)}
  .page-hero-grid{grid-template-columns:180px 1fr}
  .case-layout{grid-template-columns:190px minmax(0,1fr);gap:50px}
}
@media (max-width:760px){
  :root{--section:78px;--gutter:20px}
  body{line-height:1.55}
  .navbar{height:68px}.brand{font-size:14px}.brand span{display:none}
  .menu-toggle{display:block;z-index:91}
  .nav-links{position:fixed;inset:68px 0 auto 0;background:var(--bg);border-bottom:1px solid var(--line);padding:18px var(--gutter) 26px;display:none;flex-direction:column;align-items:stretch;gap:0;box-shadow:0 22px 40px rgba(23,25,28,.08)}
  .nav-links.open{display:flex}.nav-links>a:not(.nav-cta){display:block;padding:13px 0;border-bottom:1px solid var(--line)}
  .nav-cta{margin-top:16px;text-align:center}
  .hero{padding:38px 0 72px}.hero-grid{display:flex;flex-direction:column;gap:38px}.hero-copy{order:1}.hero-visual{order:2;width:100%}
  .hero-identity{margin-bottom:24px;font-size:11px}.hero-identity i{width:34px}
  .hero h1{font-size:clamp(45px,13vw,66px);line-height:1.01;margin-bottom:24px}.hero-intro{font-size:20px}.hero-detail{font-size:15px}
  .hero-meta{font-size:13px;gap:8px 14px}.actions{margin-top:28px}.btn{min-height:50px;padding-inline:19px}
  .hero-photo-shell{aspect-ratio:.9;border-radius:24px}.hero-photo-shell img{object-position:50% 40%}.hero-fact{left:16px;bottom:16px;max-width:205px;padding:14px 16px}.hero-fact strong{font-size:29px}
  .section-head{grid-template-columns:1fr;gap:18px;margin-bottom:46px}.section-head h2{font-size:38px;line-height:1.07}.section-index{padding-top:0}
  .lead{font-size:18px}
  .problem{grid-template-columns:36px 1fr;gap:10px 18px;padding:24px 0}.problem-num{grid-row:1 / span 2}.problem h3{font-size:22px}.problem p{font-size:15px}
  .execution-grid{grid-template-columns:1fr;border-left:0}.execution-step{min-height:0;padding:24px 0;border-right:0}.execution-step h3{margin:22px 0 8px;font-size:25px}.execution-note{grid-template-columns:1fr;gap:20px;margin-top:42px;padding-top:32px}.execution-note p{font-size:16px}
  .metrics{grid-template-columns:1fr 1fr;gap:9px}.metric{min-height:148px;padding:20px}.metric strong{font-size:38px}
  .case-link{grid-template-columns:36px 1fr 30px;gap:10px 14px;padding:23px 0}.case-link .case-tag{grid-column:2 / -1;margin-top:0}.case-link h3{font-size:22px}.case-link p{font-size:13px}.case-link .arrow{grid-column:3;grid-row:1 / span 2;width:30px;height:30px}
  .formats-grid,.benefits-grid,.page-grid{grid-template-columns:1fr}.format-card{min-height:0}.benefits-grid{border-left:0}.benefit{border-left:0;padding:28px 0;border-right:0;min-height:0}
  .principles{grid-template-columns:1fr;border-left:0}.principle{min-height:0;border-right:0;padding:26px 0}.principle h3{margin:24px 0 12px}
  .about-preview{grid-template-columns:1fr;gap:34px}.about-photo{aspect-ratio:.95}.about-copy h2{font-size:38px}.about-copy p{font-size:16px}.about-facts{grid-template-columns:1fr}
  .cta-layout{grid-template-columns:1fr;gap:38px}.cta-layout h2{font-size:43px}.cta-layout p{font-size:16px}
  .footer-grid{align-items:flex-start;flex-direction:column}.footer-links{flex-wrap:wrap;gap:14px 20px}
  .page-hero{padding:56px 0 62px}.page-hero-grid{grid-template-columns:1fr;gap:18px}.page-hero h1{font-size:45px}.page-hero p{font-size:18px}
  .case-body{padding:62px 0}.case-layout{grid-template-columns:1fr}.case-toc{display:none}.case-content h2{font-size:32px}.case-content p{font-size:16px}.case-content section{padding-bottom:44px;margin-bottom:44px}
  .flow{gap:6px}.flow i{display:none}
  .prose h2{font-size:33px;margin-top:56px}.prose p{font-size:16px}
  .contact-layout{grid-template-columns:1fr}.contact-item{grid-template-columns:88px 1fr}.contact-item a,.contact-item strong{font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.reveal{opacity:1;transform:none;transition:none}.btn,.case-link,.case-link .arrow{transition:none}}

/* v3: refined scale, hero balance and bilingual navigation */
:root{
  --container:1320px;
  --display:clamp(52px,4.8vw,76px);
  --h1:clamp(44px,4.25vw,66px);
  --h2:clamp(36px,3.55vw,54px);
  --body-lg:clamp(19px,1.38vw,23px);
}
.navbar{height:88px;gap:30px}
.brand{font-size:18px;gap:14px;font-weight:760}
.brand span{font-size:12px;letter-spacing:.13em}
.nav-links{gap:27px;font-size:16px}
.nav-cta{padding:13px 20px;font-size:16px}
.language-switch{display:flex;align-items:center;gap:7px;margin-left:2px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--muted);white-space:nowrap}
.language-switch a{padding:5px 2px;color:var(--muted)}
.language-switch a.active{color:var(--ink)}
.language-switch span{opacity:.45}
.hero{padding:clamp(34px,3.6vw,52px) 0 clamp(62px,5.4vw,82px)}
.hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(390px,.82fr);gap:clamp(52px,6vw,82px);align-items:center}
.hero-copy{padding-top:0;max-width:790px}
.hero-identity{font-size:14px;gap:16px;margin-bottom:24px;letter-spacing:.085em}
.hero-identity i{width:46px}
.hero h1{font-size:var(--display);line-height:1.01;letter-spacing:-.046em;margin:0 0 24px;max-width:790px;font-weight:670}
.hero-intro{font-size:clamp(20px,1.48vw,23px);line-height:1.47;max-width:690px}
.hero-detail{font-size:17px;line-height:1.56;max-width:690px;margin-top:18px}
.hero-meta{font-size:14px;gap:9px 18px;margin-top:22px}
.actions{margin-top:30px;gap:12px}
.btn{min-height:56px;padding:0 25px;font-size:16px}
.btn-primary{padding-inline:28px}
.hero-visual{display:flex;justify-content:flex-end;align-items:center}
.hero-photo-shell{width:min(100%,480px);aspect-ratio:4/5;max-height:600px;border-radius:30px}
.hero-photo-shell img{object-position:50% 40%}
.hero-fact{display:none}
.section-head{grid-template-columns:230px minmax(0,1fr)}
.section-index{font-size:13px}
.kicker{font-size:13px}
.page-hero{padding:clamp(62px,6vw,92px) 0 clamp(58px,5vw,82px)}
.page-hero h1{max-width:900px}
.page-hero p{max-width:780px}

@media (max-width:1180px){
  .navbar{height:82px}
  .brand{font-size:17px}
  .nav-links{gap:20px;font-size:15px}
  .hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(350px,.82fr);gap:42px}
  .hero h1{font-size:clamp(50px,5.7vw,68px)}
  .hero-photo-shell{width:min(100%,450px);max-height:560px}
}
@media (max-width:1050px){
  .language-switch{margin-left:auto}
  .nav-links{gap:16px}
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.75fr);gap:38px}
  .hero h1{font-size:clamp(47px,6vw,62px)}
  .hero-intro{font-size:20px}
}
@media (max-width:760px){
  .navbar{height:70px}.brand{font-size:15px}.brand span{display:none}
  .nav-links{inset:70px 0 auto 0}
  .language-switch{order:8;margin:16px 0 0;padding-top:12px;border-top:1px solid var(--line);justify-content:flex-start;font-size:14px}
  .nav-cta{font-size:15px}
  .hero{padding:30px 0 56px}
  .hero-grid{gap:32px}
  .hero-identity{font-size:12px;margin-bottom:18px;gap:11px;letter-spacing:.07em}
  .hero-identity i{width:28px}
  .hero h1{font-size:clamp(39px,11.6vw,50px);line-height:1.02;letter-spacing:-.042em;margin-bottom:20px}
  .hero-intro{font-size:18px;line-height:1.46}
  .hero-detail{font-size:16px;line-height:1.5;margin-top:14px}
  .hero-meta{font-size:13px;margin-top:18px}
  .actions{margin-top:24px}
  .btn{min-height:52px;font-size:15px;padding-inline:20px}
  .hero-visual{justify-content:flex-start}
  .hero-photo-shell{width:min(100%,430px);max-height:none;aspect-ratio:4/5;border-radius:24px}
  .section-index,.kicker{font-size:12px}
  .section-head h2{font-size:36px}
  .page-hero h1{font-size:42px}
}
@media (max-width:520px){
  .hero h1{font-size:clamp(37px,11.4vw,46px)}
  .hero-identity{flex-wrap:wrap}
  .hero-identity i{display:none}
  .actions{display:grid;grid-template-columns:1fr}
  .actions .btn{width:100%}
  .metrics{grid-template-columns:1fr}
}


/* v4: Simplified Chinese typography and three-language navigation */
html[lang="zh-CN"] body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",Arial,sans-serif;line-height:1.7;word-break:normal;line-break:strict}
html[lang="zh-CN"] .brand span,html[lang="zh-CN"] .hero-identity,html[lang="zh-CN"] .kicker,html[lang="zh-CN"] .section-index,html[lang="zh-CN"] .field label{letter-spacing:.045em;text-transform:none}
html[lang="zh-CN"] .hero h1{font-size:clamp(48px,4.45vw,70px);line-height:1.13;letter-spacing:-.022em;max-width:760px;font-weight:680}
html[lang="zh-CN"] .hero-intro{font-size:clamp(19px,1.35vw,22px);line-height:1.62;max-width:700px}
html[lang="zh-CN"] .hero-detail{font-size:16px;line-height:1.75;max-width:700px}
html[lang="zh-CN"] .section-head h2{line-height:1.18;letter-spacing:-.018em}
html[lang="zh-CN"] .page-hero h1{line-height:1.16;letter-spacing:-.02em}
html[lang="zh-CN"] .problem h3,html[lang="zh-CN"] .case-link h3,html[lang="zh-CN"] .format-card h3,html[lang="zh-CN"] .benefit h3,html[lang="zh-CN"] .principle h3,html[lang="zh-CN"] .execution-step h3{letter-spacing:-.012em;line-height:1.32}
html[lang="zh-CN"] .problem p,html[lang="zh-CN"] .format-card p,html[lang="zh-CN"] .benefit p,html[lang="zh-CN"] .principle p,html[lang="zh-CN"] .case-content p,html[lang="zh-CN"] .prose p{line-height:1.8}
html[lang="zh-CN"] .language-switch{letter-spacing:0;gap:6px}
html[lang="zh-CN"] .nav-links{font-size:15px}
html[lang="zh-CN"] .nav-cta{font-weight:650}
@media (max-width:760px){html[lang="zh-CN"] .hero h1{font-size:clamp(38px,10.6vw,48px);line-height:1.16;letter-spacing:-.018em}html[lang="zh-CN"] .hero-intro{font-size:18px;line-height:1.62}html[lang="zh-CN"] .hero-detail{font-size:15px;line-height:1.72}html[lang="zh-CN"] .section-head h2{font-size:34px;line-height:1.2}html[lang="zh-CN"] .page-hero h1{font-size:39px;line-height:1.18}html[lang="zh-CN"] .language-switch{display:flex;gap:7px}}

.mobile-language-switch{display:none;align-items:center;gap:6px;font-size:12px;font-weight:700;white-space:nowrap;color:var(--muted)}
.mobile-language-switch a{color:var(--muted)}
.mobile-language-switch a.active{color:var(--ink)}
.mobile-language-switch span{opacity:.45}
@media (max-width:760px){.mobile-language-switch{display:flex;margin-left:auto;margin-right:2px}.navbar{gap:12px}.menu-toggle{margin-left:0}.nav-links .language-switch{display:none}}

/* v5: responsive hardening for phones and tablets */

/* Safety against accidental horizontal page scrolling */
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

@supports (overflow: clip) {
  html,
  body {
    overflow-x: clip;
  }
}

/* Grid and flex children must be allowed to shrink */
.container,
.hero-grid > *,
.section-head > *,
.page-hero-grid > *,
.problem > *,
.execution-note > *,
.cta-layout > *,
.about-preview > *,
.case-layout > *,
.contact-layout > *,
.page-grid > * {
  min-width: 0;
}

/* Long headings and text must never widen the document */
.hero h1,
.section-head h2,
.page-hero h1,
.cta-layout h2,
.about-copy h2,
.problem h3,
.case-link h3,
.format-card h3,
.benefit h3,
.principle h3,
.execution-step h3,
.case-content h2,
.case-content h3,
.prose h2,
.prose h3 {
  max-width: 100%;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.lead,
.page-hero p,
.cta-layout p,
.case-content p,
.prose p,
.contact-quick a {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.btn,
.case-meta span,
.flow span {
  max-width: 100%;
}

/* Tablet navigation: use the same compact menu pattern as phones */
@media (max-width: 1050px) {
  .navbar {
    gap: 14px;
  }

  .menu-toggle {
    display: block;
    z-index: 91;
    flex: 0 0 auto;
  }

  .mobile-language-switch {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    margin-right: 2px;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    color: var(--muted);
  }

  .mobile-language-switch a {
    color: var(--muted);
  }

  .mobile-language-switch a.active {
    color: var(--ink);
  }

  .mobile-language-switch span {
    opacity: .45;
  }

  .nav-links {
    position: fixed;
    inset: 82px 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 18px var(--gutter) 26px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    box-shadow: 0 22px 40px rgba(23,25,28,.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links > a:not(.nav-cta) {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-links .language-switch {
    display: none;
  }

  .nav-cta {
    margin-top: 16px;
    text-align: center;
  }
}

/* Portrait tablets and large phones */
@media (max-width: 900px) {
  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: 36px;
  }

  .hero-copy {
    order: 1;
    width: 100%;
  }

  .hero-visual {
    order: 2;
    width: 100%;
    justify-content: flex-start;
  }

  .hero-photo-shell {
    width: min(100%, 520px);
    max-height: none;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 46px;
  }

  .section-index {
    padding-top: 0;
  }

  .problem {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px 18px;
  }

  .problem-num {
    grid-row: 1 / span 2;
  }

  .execution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-preview,
  .page-hero-grid,
  .case-layout,
  .contact-layout,
  .cta-layout {
    grid-template-columns: 1fr;
  }

  .page-hero-grid {
    gap: 18px;
  }

  .case-layout {
    gap: 0;
  }

  .case-toc {
    display: none;
  }

  .about-preview {
    gap: 34px;
  }

  .cta-layout {
    gap: 34px;
  }

  .case-link {
    grid-template-columns: 36px minmax(0, 1fr) 30px;
    gap: 10px 14px;
  }

  .case-link .case-tag {
    grid-column: 2 / -1;
  }

  .case-link .arrow {
    grid-column: 3;
    grid-row: 1 / span 2;
  }
}

/* Phones */
@media (max-width: 760px) {
  :root {
    --section: 72px;
    --gutter: 20px;
  }

  .navbar {
    height: 70px;
    gap: 12px;
  }

  .nav-links {
    inset: 70px 0 auto 0;
  }

  .brand {
    font-size: 15px;
  }

  .mobile-language-switch {
    font-size: 13px;
    gap: 6px;
  }

  .hero {
    padding: 30px 0 56px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 48px);
    line-height: 1.03;
    letter-spacing: -.04em;
  }

  .hero-intro {
    font-size: 18px;
  }

  .hero-detail {
    font-size: 16px;
  }

  .section-head {
    gap: 16px;
    margin-bottom: 40px;
  }

  .section-head h2 {
    font-size: clamp(34px, 9.4vw, 40px);
    line-height: 1.08;
    letter-spacing: -.035em;
  }

  .section-head .lead {
    font-size: 18px;
    line-height: 1.5;
  }

  .page-hero {
    padding: 52px 0 58px;
  }

  .page-hero h1 {
    font-size: clamp(35px, 10vw, 42px);
    line-height: 1.06;
    letter-spacing: -.038em;
  }

  .page-hero p {
    font-size: 17px;
    line-height: 1.55;
  }

  .case-meta {
    gap: 8px;
  }

  .case-meta span {
    white-space: normal;
    line-height: 1.35;
  }

  .case-body {
    padding: 56px 0;
  }

  .case-content h2 {
    font-size: clamp(29px, 8vw, 34px);
  }

  .case-content p,
  .prose p {
    font-size: 16px;
  }

  .execution-grid,
  .principles,
  .metrics,
  .formats-grid,
  .benefits-grid,
  .page-grid {
    grid-template-columns: 1fr;
  }

  .execution-step,
  .principle,
  .benefit {
    min-height: 0;
  }

  .cta-layout h2 {
    font-size: clamp(34px, 9.4vw, 40px);
    line-height: 1.06;
    letter-spacing: -.035em;
  }

  .cta-layout p {
    font-size: 16px;
  }

  .contact-quick {
    width: 100%;
  }

  .contact-quick a {
    font-size: 17px;
  }

  .actions {
    max-width: 100%;
  }

  .btn {
    white-space: normal;
    text-align: center;
  }

  .contact-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-item span {
    padding-top: 0;
  }

  html[lang="zh-CN"] .section-head h2 {
    font-size: clamp(32px, 8.8vw, 38px);
    line-height: 1.2;
  }

  html[lang="zh-CN"] .page-hero h1 {
    font-size: clamp(33px, 9vw, 39px);
    line-height: 1.18;
  }

  html[lang="zh-CN"] .cta-layout h2 {
    font-size: clamp(32px, 8.8vw, 38px);
    line-height: 1.18;
  }
}

/* Narrow phones */
@media (max-width: 430px) {
  :root {
    --gutter: 16px;
    --section: 64px;
  }

  .navbar {
    height: 66px;
    gap: 8px;
  }

  .nav-links {
    inset: 66px 0 auto 0;
  }

  .brand {
    font-size: 14px;
  }

  .mobile-language-switch {
    font-size: 12px;
    gap: 5px;
  }

  .menu-toggle {
    padding: 8px;
  }

  .menu-toggle span {
    width: 22px;
  }

  .hero h1 {
    font-size: clamp(36px, 10.8vw, 44px);
  }

  .section-head h2 {
    font-size: clamp(32px, 9.3vw, 38px);
  }

  .page-hero h1 {
    font-size: clamp(33px, 9.8vw, 39px);
  }

  .cta-layout h2 {
    font-size: clamp(32px, 9.3vw, 38px);
  }

  .case-callout {
    padding: 24px 20px;
  }

  .form-card {
    padding: 22px 18px;
  }
}

/* Very narrow phones */
@media (max-width: 360px) {
  :root {
    --gutter: 14px;
  }

  .brand {
    font-size: 13px;
  }

  .mobile-language-switch {
    font-size: 11px;
    gap: 4px;
  }

  .navbar {
    gap: 6px;
  }
}