:root{
  --bg:#f7f4ef; --paper:#fffdfa; --panel:#fffdfa; --sand:#eee8df;
  --ink:#282721; --muted:#6d6a63; --faint:#968d80;
  --line:#e2ddd5; --line2:#efe9e0;
  --accent:#978369; --accent-deep:#7a6851; --accent-soft:#f0eae1;
  --green:#5c6b53; --green-soft:#eef2ea;
  --radius:0px;
  --serif:Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --wrap:1320px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 5vw}
.narrow{max-width:800px;margin:0 auto;padding:0 5vw}
section{padding:108px 0}

.kicker{display:inline-flex;align-items:center;gap:14px;font-size:.71rem;letter-spacing:.23em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:22px}
.kicker::before{content:"";width:38px;height:1px;background:var(--accent);opacity:.55}

h1,h2,h3,h4{font-family:var(--serif);font-weight:400;letter-spacing:-.032em;line-height:1.08}
h1{font-size:clamp(3rem,5.6vw,5.5rem)}
h2{font-size:clamp(2.3rem,3.6vw,3.55rem);margin-bottom:18px;line-height:1.1}
h3{font-size:clamp(1.35rem,1.7vw,1.62rem);line-height:1.28;letter-spacing:-.018em}
h1 em,h2 em{font-style:italic;color:var(--accent-deep)}
.lead{color:var(--muted);font-size:clamp(1.02rem,1.25vw,1.14rem);max-width:660px;line-height:1.68}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:22px;padding:17px 30px;border-radius:0;font-weight:600;font-size:.84rem;letter-spacing:.01em;text-decoration:none;min-height:56px;border:1px solid transparent;transition:background .2s,color .2s,transform .2s}
.btn::after{content:"↗";font-size:1rem;line-height:1;opacity:.85}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#3d3b33}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:#e7e0d5}

nav{position:sticky;top:0;z-index:60;background:rgba(247,244,239,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(213,206,197,.85)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:78px;gap:24px}
.brand{font-family:var(--serif);font-weight:400;font-size:1.32rem;text-decoration:none;letter-spacing:-.03em;white-space:nowrap}
.brand i{font-style:italic;color:var(--accent-deep)}
.nav-links{display:flex;gap:clamp(16px,2vw,34px);font-size:.8rem;font-weight:600;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;white-space:nowrap;transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{background:var(--ink);color:#fff!important;padding:13px 20px;border-radius:0;font-weight:600;font-size:.76rem;min-height:45px;display:inline-flex;align-items:center}
.menu-btn{display:none;background:none;border:1px solid var(--line);padding:9px 12px;font-size:16px;cursor:pointer}

/* hero: 左文案 + 右图 */
.hero{padding:0;position:relative;overflow:hidden;background:var(--paper)}
.hero::before{content:none}
.hero-grid{display:grid;grid-template-columns:47% 53%;gap:0;align-items:stretch;max-width:none;padding:0}
.hero-copy{padding:92px 4vw 86px max(5vw,calc((100vw - var(--wrap))/2));align-self:center}
.hero h1{font-size:clamp(2.9rem,4.6vw,4.5rem);line-height:1.04;letter-spacing:-.038em}
.hero .sub{margin-top:26px;font-size:1.06rem;color:var(--muted);max-width:470px;line-height:1.66}
.hero-actions{margin-top:36px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-note{margin-top:22px;font-size:.78rem;color:var(--faint);max-width:440px;line-height:1.6}
.hero-visual{position:relative;overflow:hidden;min-height:640px;background:var(--sand)}
.hero-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(247,244,239,.16),transparent 34%);pointer-events:none}
.hero-card{background:var(--paper);border:1px solid var(--line);padding:32px}
.hero-card h4{font-family:var(--serif);font-size:1.05rem;margin-bottom:16px}
.hero-card ul{list-style:none;font-size:.87rem;color:var(--muted)}
.hero-card li{padding:12px 0;border-top:1px solid var(--line2);display:flex;gap:10px;line-height:1.55}
.hero-card li:first-child{border-top:none}
.hero-card li b{color:var(--ink);font-weight:600}

/* strips */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:30px 26px;border-left:1px solid var(--line);text-align:left}
.strip-item:first-child{border-left:none}
.strip-item b{display:block;font-family:var(--serif);font-size:1.55rem;font-weight:400;margin-bottom:6px;letter-spacing:-.02em}
.strip-item span{font-size:.76rem;color:var(--muted);line-height:1.5;display:block}

.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}
.intro-grid .hero-card{background:transparent;border:0;padding:0}
.intro-grid .hero-card li{padding:14px 0}
@media(max-width:900px){.intro-grid{grid-template-columns:1fr;gap:34px}}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:52px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:44px}
.card{background:var(--paper);border:1px solid var(--line);padding:30px;transition:border-color .25s,transform .25s;overflow:hidden}
.card:hover{border-color:#cfc7ba;transform:translateY(-3px)}
.card .num{font-family:var(--serif);font-size:.72rem;color:var(--accent);letter-spacing:.16em;margin-bottom:16px;text-transform:uppercase}
.card p{color:var(--muted);font-size:.9rem;margin-top:12px;line-height:1.62}
.card a.more{display:inline-flex;align-items:center;gap:9px;margin-top:20px;font-size:.76rem;font-weight:600;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--accent);padding-bottom:4px;transition:gap .2s}
.card a.more:hover{gap:15px}

.prose{max-width:800px;margin:0 auto}
.prose p{margin:0 0 22px;color:#4a4740;font-size:1.05rem;line-height:1.78}
.prose h2{margin:56px 0 18px}
.prose h3{margin:38px 0 12px}
.prose ul,.prose ol{margin:0 0 24px 22px;color:#4a4740}
.prose li{margin-bottom:10px}
.prose blockquote{border-left:2px solid var(--accent);padding:8px 0 8px 26px;margin:32px 0;font-family:var(--serif);font-size:1.35rem;color:var(--accent-deep);font-style:italic;line-height:1.4}
.prose table{width:100%;border-collapse:collapse;margin:30px 0;font-size:.9rem}
.prose th,.prose td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line)}
.prose th{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:700;background:var(--sand)}
.prose code{background:var(--sand);padding:2px 6px;font-size:.86em}

.table-wrap{overflow-x:auto;background:var(--paper);border:1px solid var(--line)}
table.spec{width:100%;border-collapse:collapse;font-size:.9rem;min-width:560px}
table.spec th,table.spec td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line2)}
table.spec th{font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;color:var(--accent);background:var(--sand);font-weight:700}
table.spec tr:last-child td{border-bottom:none}
table.spec td:first-child{font-weight:600;width:38%}

.faq-item{background:transparent;border:0;border-bottom:1px solid var(--line);padding:0}
.faq-item summary{cursor:pointer;list-style:none;padding:22px 0;font-weight:600;font-size:.95rem;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--accent);font-weight:400;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item .a{padding:0 0 24px;color:var(--muted);font-size:.94rem;line-height:1.72;max-width:840px}

.band{background:#272820;color:#f3ede5;padding:76px 68px;display:grid;grid-template-columns:1.3fr .7fr;gap:52px;align-items:center;margin:0 auto}
.band h2{color:#fff;font-size:clamp(1.9rem,2.8vw,2.7rem);line-height:1.14}
.band h2 em{color:#c9b08a}
.band p{color:#c2bfb2;font-size:.95rem;margin-top:16px;max-width:540px;line-height:1.7}
.band .actions{display:flex;flex-direction:column;gap:12px}
.band .btn-light{background:#fff;color:var(--ink);justify-content:center}
.band .btn-ghost{border:1px solid #4d4d42;color:#f3ede5;justify-content:center;background:transparent}

.crumbs{font-size:.75rem;color:var(--faint);padding:26px 0 0;display:flex;gap:9px;flex-wrap:wrap}
.crumbs a{color:var(--faint);text-decoration:none}
.crumbs a:hover{color:var(--accent-deep)}
.crumbs span{color:#c0b6a6}

.art-head{padding:64px 0 24px}
.art-head h1{font-size:clamp(2.3rem,3.8vw,3.6rem);max-width:860px;line-height:1.1}
.art-meta{margin-top:24px;font-size:.78rem;color:var(--faint);display:flex;gap:20px;flex-wrap:wrap}

footer{background:#25251f;color:#b7b3a9;padding:78px 0 28px;margin-top:0}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:52px}
footer .brand{color:#f3ede5;display:block;margin-bottom:18px;font-size:1.6rem}
footer p{font-size:.82rem;line-height:1.75;max-width:320px}
footer h5{color:#f0e5d7;font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;margin-bottom:20px;font-weight:700}
footer ul{list-style:none;font-size:.82rem}
footer li{margin-bottom:11px}
footer a{color:#b7b3a9;text-decoration:none}
footer a:hover{color:#fff}
.f-bottom{margin-top:64px;padding-top:24px;border-top:1px solid #43443a;font-size:.72rem;color:#a5a59b;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.f-social{display:flex;gap:18px;margin-top:18px}
.f-social a{font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:#8f8b81;border-bottom:1px solid #4a4b40;padding-bottom:3px}
.f-social a:hover{color:#d9b878;border-color:#d9b878}

.big-img{width:100%;aspect-ratio:21/9;object-fit:cover;display:block}
.card-img{display:block;width:calc(100% + 60px);max-width:none;height:200px;object-fit:cover;margin:-30px -30px 24px;transition:transform .55s}
.card:hover .card-img{transform:scale(1.04)}
.img-duo{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.img-duo .big-img{aspect-ratio:4/3}
.img-cap{font-size:.78rem;color:var(--faint);margin-top:10px}

.sent-banner{margin-top:16px;padding:16px 20px;border:1px solid #c4dcc9;background:var(--green-soft);color:#2f5c37;font-size:.9rem;font-weight:500}
.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px;margin-top:24px}
.qf-field{display:flex;flex-direction:column;gap:7px}
.qf-field.full,.qf-submit,.form-note{grid-column:1/-1}
.qf-field label{font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.quote-form input,.quote-form select,.quote-form textarea{width:100%;padding:15px 16px;border:1px solid #d8d1c7;border-radius:0;background:#fff;color:var(--ink);font:inherit;font-size:.95rem;transition:border-color .2s}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{outline:none;border-color:var(--accent)}
.quote-form textarea{min-height:140px;resize:vertical}
.qf-submit{margin-top:6px;padding:17px 30px;border:none;background:var(--ink);color:#fff;font-weight:600;font-size:.9rem;cursor:pointer;min-height:56px;transition:background .2s}
.qf-submit:hover{background:#3d3b33}
.form-note{font-size:.76rem;color:var(--faint);margin:0;line-height:1.6}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}

@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr}
  .hero-copy{padding:76px 5vw 64px}
  .hero-visual{min-height:400px;height:400px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .f-grid{gap:36px}
}

@media (max-width:900px){
  section{padding:68px 0}
  h1{font-size:clamp(2.4rem,7vw,3.2rem)}
  h2{font-size:clamp(1.9rem,5vw,2.4rem)}
  .hero h1{font-size:clamp(2.4rem,7.4vw,3.4rem)}
  .hero-copy{padding:64px 5vw 54px}
  .band{grid-template-columns:1fr;padding:44px 28px;gap:30px}
  .f-grid{grid-template-columns:1fr 1fr}
  .grid-3,.grid-2{grid-template-columns:1fr;gap:22px}
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .strip-item{border-left:none;border-top:1px solid var(--line);padding:22px 0}
  .strip-item:first-child{border-top:none}
  .strip-item:nth-child(2){border-top:none}
  .nav-links{display:none}
  .menu-btn{display:block}
  nav.open .nav-links{display:flex;position:absolute;top:78px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;padding:22px 5vw;gap:18px;align-items:flex-start}
  .art-head h1{font-size:2rem}
  .prose p{font-size:1rem}
  .big-img{aspect-ratio:16/10}
  .card-img{height:170px}
}
@media (max-width:760px){
  .img-duo{grid-template-columns:1fr}
}
@media (max-width:600px){
  .quote-form{grid-template-columns:1fr}
  .hero-visual{min-height:320px;height:320px}
  .f-grid{grid-template-columns:1fr;gap:32px}
  .btn{width:100%}
  .actions .btn{width:100%}
}