:root {
  --forest: #123d2c;
  --forest-deep: #09291d;
  --leaf: #2f7754;
  --sage: #dce8de;
  --paper: #ffffff;
  --warm: #f4f1e9;
  --ink: #142019;
  --muted: #667169;
  --brass: #b08b50;
  --line: rgba(20, 32, 25, .14);
  --shell: 1240px;
  --serif: "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.7; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
em { color: var(--leaf); font-style: normal; }
.section-shell { width: min(calc(100% - 64px), var(--shell)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 200; left: 16px; top: -64px; padding: 10px 15px; background: #fff; color: var(--forest); }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid #d5a957; outline-offset: 4px; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: 76px; color: #fff; transition: color .3s, background .3s, box-shadow .3s; }
.site-header.scrolled { color: var(--ink); background: rgba(255, 255, 255, .96); box-shadow: 0 1px 0 rgba(0,0,0,.08); backdrop-filter: blur(16px); }
.nav-shell { width: min(calc(100% - 64px), var(--shell)); height: 100%; margin: auto; display: grid; grid-template-columns: 230px 1fr 230px; align-items: center; }
.brand { display: inline-flex; align-items: center; gap: 10px; width: max-content; color: inherit; font-size: 20px; font-weight: 800; letter-spacing: .04em; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.nav-menu { display: flex; justify-content: center; gap: 40px; height: 100%; }
.nav-menu a { position: relative; display: grid; place-items: center; font-size: 14px; }
.nav-menu a::after { content: ""; position: absolute; left: 50%; bottom: 17px; width: 0; height: 1px; background: currentColor; transition: .25s; }
.nav-menu a:hover::after, .nav-menu a.active::after { left: 0; width: 100%; }
.header-cta { justify-self: end; font-size: 13px; border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.nav-toggle { display: none; }

.hero { position: relative; min-height: 820px; height: 100svh; max-height: 980px; color: #fff; background: var(--forest-deep); overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(5,28,19,.91) 0%, rgba(5,28,19,.77) 38%, rgba(5,28,19,.18) 68%, rgba(5,28,19,.06) 100%); }
.hero-image, .hero-slides, .hero-slide { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-image { left: 31%; width: 69%; overflow: hidden; }
.hero-image::before { content: ""; position: absolute; z-index: 2; inset: 0 auto 0 0; width: 24%; background: linear-gradient(90deg, var(--forest-deep), transparent); }
.hero-slide { object-fit: cover; opacity: 0; transform: scale(1.035); transition: opacity 1s ease, transform 7s ease; }
.hero-slide.active { opacity: 1; transform: scale(1); }
.hero-shell { position: relative; z-index: 3; width: min(calc(100% - 64px), var(--shell)); height: 100%; min-height: inherit; margin: auto; display: flex; flex-direction: column; justify-content: center; }
.hero-copy { width: min(610px, 58vw); padding-top: 44px; }
.hero h1 { margin: 0; font: 400 clamp(58px, 5.9vw, 92px)/1.08 var(--serif); letter-spacing: -.055em; }
.hero h1 em { color: #c8dfcb; }
.hero-copy > p { margin: 30px 0 0; color: rgba(255,255,255,.73); font-size: 17px; line-height: 2; }
.hero-actions { display: flex; align-items: center; gap: 32px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; min-height: 54px; padding: 0 24px; border: 1px solid transparent; font-size: 14px; font-weight: 700; transition: transform .25s, background .25s, color .25s; }
.button:hover { transform: translateY(-2px); }
.button-light { background: #fff; color: var(--forest); }
.button-light:hover { background: #e7efe7; }
.text-link { font-size: 14px; border-bottom: 1px solid currentColor; padding: 5px 0; }
.hero-foot { position: absolute; left: 0; right: 0; bottom: 28px; display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)) 240px; border-top: 1px solid rgba(255,255,255,.26); }
.hero-promise { display: flex; gap: 14px; align-items: center; min-height: 72px; border-right: 1px solid rgba(255,255,255,.18); }
.hero-promise span { color: #d6b77d; font: 12px Georgia, serif; }
.hero-promise strong { font-size: 13px; letter-spacing: .08em; }
.hero-controls { display: flex; justify-content: flex-end; align-items: center; gap: 15px; }
.hero-controls button { width: 40px; height: 40px; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; background: transparent; cursor: pointer; transition: .25s; }
.hero-controls button:hover { background: #fff; color: var(--forest); }
.slide-count { width: 48px; text-align: center; font: 12px Georgia, serif; }

.section-index { margin: 0; color: var(--brass); font-size: 12px; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
.manifesto { padding: 118px 0 126px; background: var(--paper); }
.manifesto-grid { display: grid; grid-template-columns: 1fr 2.15fr 1.05fr; gap: 64px; align-items: start; }
.manifesto h2 { margin: 0; font: 400 clamp(42px, 4.2vw, 64px)/1.28 var(--serif); letter-spacing: -.035em; }
.manifesto-copy { margin: 7px 0 0; color: var(--muted); font-size: 15px; line-height: 2; }

.about { padding: 126px 0 138px; background: var(--warm); overflow: hidden; }
.about-heading { display: grid; grid-template-columns: 1fr 2.15fr 1.05fr; gap: 64px; align-items: end; margin-bottom: 70px; }
.about-heading h2 { margin: 0; font: 400 clamp(50px, 5vw, 74px)/1.1 var(--serif); letter-spacing: -.045em; }
.about-heading > p:last-child { margin: 0 0 7px; color: var(--muted); font-size: 15px; line-height: 1.9; }
.about-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(340px, .8fr); gap: clamp(54px, 7vw, 102px); align-items: center; }
.about-media { position: relative; margin: 0; min-width: 0; }
.about-media img { width: 100%; height: clamp(470px, 48vw, 650px); object-fit: cover; }
.about-media figcaption { position: absolute; right: -36px; bottom: 34px; width: 236px; padding: 22px 24px; background: var(--forest); color: #fff; }
.about-media figcaption span, .about-media figcaption strong { display: block; }
.about-media figcaption span { color: #c5dcc8; font-size: 11px; letter-spacing: .16em; }
.about-media figcaption strong { margin-top: 7px; font: 400 19px/1.5 var(--serif); }
.about-reasons { min-width: 0; }
.reason { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 24px; padding: 30px 0; border-top: 1px solid var(--line); }
.reason:last-child { border-bottom: 1px solid var(--line); }
.reason > span { color: var(--brass); font: 14px Georgia, serif; padding-top: 5px; }
.reason h3 { margin: 0 0 10px; font: 400 23px/1.4 var(--serif); }
.reason p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }

.categories { padding: 126px 0 140px; color: #fff; background: var(--forest-deep); }
.categories-heading { display: flex; align-items: end; justify-content: space-between; gap: 60px; margin-bottom: 62px; }
.categories-heading h2 { margin: 12px 0 0; font: 400 clamp(50px, 5vw, 74px)/1.12 var(--serif); letter-spacing: -.04em; }
.categories-heading h2 em { color: #bad4bf; }
.categories-heading > p { max-width: 340px; margin: 0 0 10px; color: rgba(255,255,255,.58); font-size: 14px; }
.category-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 250px; gap: 18px; }
.category-card { position: relative; grid-column: span 4; min-width: 0; overflow: hidden; background: #184531; }
.category-card.category-feature { grid-column: span 7; grid-row: span 2; }
.category-card.category-wide { grid-column: span 5; }
.category-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.category-card::after { content: ""; position: absolute; inset: 32% 0 0; background: linear-gradient(transparent, rgba(4,21,14,.88)); }
.category-card:hover img { transform: scale(1.045); }
.category-card div { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 21px; }
.category-card span { display: block; margin-bottom: 8px; color: #dfc58f; font: 11px Georgia, serif; }
.category-card h3 { margin: 0; font: 400 25px/1.25 var(--serif); }
.category-card p { margin: 3px 0 0; color: rgba(255,255,255,.65); font-size: 12px; }
.category-feature div { left: 34px; bottom: 31px; }
.category-feature h3 { font-size: 36px; }

.story { padding: 132px 0 122px; background: #fff; }
.story-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: 42px 110px; }
.story-intro h2 { max-width: 720px; margin: 18px 0 0; font: 400 clamp(48px, 4.7vw, 70px)/1.2 var(--serif); letter-spacing: -.04em; }
.story-intro h2 em { display: block; }
.story-body { padding-top: 42px; }
.story-body p { margin: 0 0 18px; color: var(--muted); font-size: 15px; line-height: 2; }
.stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); margin: 48px 0 0; padding: 0; border-top: 1px solid var(--line); }
.stats div { padding: 30px 20px 0 0; border-right: 1px solid var(--line); }
.stats div:not(:first-child) { padding-left: 30px; }
.stats div:last-child { border-right: 0; }
.stats dt { color: var(--forest); font: 400 47px/1.2 Georgia, serif; }
.stats sup { font-size: .48em; vertical-align: top; }
.stats dd { margin: 8px 0 0; color: var(--muted); font-size: 12px; }

.quality { padding: 112px 0 128px; background: var(--sage); }
.quality-heading { display: flex; justify-content: space-between; align-items: end; gap: 50px; margin-bottom: 58px; }
.quality-heading h2 { max-width: 760px; margin: 0; font: 400 clamp(42px, 4vw, 60px)/1.22 var(--serif); text-align: right; letter-spacing: -.035em; }
.quality-steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid rgba(18,61,44,.24); }
.quality-steps li { min-width: 0; min-height: 260px; padding: 28px 28px 24px 0; border-right: 1px solid rgba(18,61,44,.2); display: flex; flex-direction: column; justify-content: space-between; }
.quality-steps li:not(:first-child) { padding-left: 28px; }
.quality-steps li:last-child { border-right: 0; }
.quality-steps > li > span { color: var(--brass); font: 13px Georgia, serif; }
.quality-steps h3 { margin: 0 0 9px; font: 400 25px/1.35 var(--serif); }
.quality-steps p { margin: 0; color: #53645a; font-size: 13px; }

.contact { position: relative; min-height: 710px; color: #fff; background: var(--forest-deep); overflow: hidden; }
.contact-backdrop { position: absolute; inset: 0 0 0 48%; background: url("sy3.webp") center/cover no-repeat; opacity: .3; }
.contact-backdrop::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--forest-deep), rgba(9,41,29,.2)); }
.contact-layout { position: relative; z-index: 2; min-height: 710px; padding: 110px 0; display: grid; grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr); gap: 90px; align-items: center; }
.contact .section-index { color: #d6ba83; }
.contact h2 { margin: 18px 0 20px; font: 400 clamp(43px, 4.1vw, 62px)/1.22 var(--serif); letter-spacing: -.035em; }
.contact h2 em { color: #c3d9c6; }
.contact-copy > p:not(.section-index) { color: rgba(255,255,255,.6); font-size: 14px; }
.contact-actions { display: flex; align-items: center; gap: 28px; margin-top: 35px; }
.contact-card { min-width: 0; padding: 38px; display: grid; grid-template-columns: minmax(0, 1fr) 180px; gap: 30px; color: var(--ink); background: rgba(255,255,255,.97); box-shadow: 0 28px 70px rgba(0,0,0,.2); }
.contact-details > div { padding: 17px 0; border-bottom: 1px solid var(--line); }
.contact-details > div:first-child { padding-top: 0; }
.contact-details > div:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-details span, .contact-details small { display: block; color: var(--muted); font-size: 11px; }
.contact-details a, .contact-details strong { display: block; margin: 4px 0 1px; overflow-wrap: anywhere; font-size: 16px; font-weight: 750; }
.qr { padding-left: 30px; border-left: 1px solid var(--line); align-self: stretch; display: flex; flex-direction: column; justify-content: center; }
.qr img { width: 145px; height: 145px; margin: 0 auto; object-fit: cover; }
.qr p { margin: 14px 0 0; text-align: center; }
.qr strong, .qr span { display: block; }
.qr strong { font-size: 13px; }
.qr span { color: var(--muted); font-size: 10px; }

.site-footer { padding: 38px 0 20px; color: #fff; background: #061b13; }
.footer-main { display: flex; align-items: center; justify-content: space-between; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand { font-size: 18px; }
.footer-brand img { width: 38px; height: 38px; }
.footer-main p { color: rgba(255,255,255,.5); font-size: 13px; }
.back-to-top { padding: 0; color: inherit; border: 0; background: transparent; font: inherit; font-size: 12px; cursor: pointer; }
.back-to-top:hover { color: rgba(255,255,255,.66); }
.footer-legal { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-top: 19px; color: rgba(255,255,255,.36); font-size: 10px; }
.footer-legal p { margin: 0; }
.footer-legal div, .footer-legal a { display: flex; align-items: center; gap: 6px; }
.footer-legal div { gap: 10px; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1100px) {
  .section-shell, .nav-shell, .hero-shell { width: min(calc(100% - 48px), var(--shell)); }
  .nav-shell { grid-template-columns: 190px 1fr 150px; }
  .nav-menu { gap: 26px; }
  .hero { min-height: 760px; }
  .hero-foot { grid-template-columns: repeat(4, 1fr) 190px; }
  .manifesto-grid, .about-heading { grid-template-columns: .65fr 1.65fr 1fr; gap: 38px; }
  .about-layout { grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); gap: 52px; }
  .about-media figcaption { right: -24px; }
  .category-grid { grid-auto-rows: 220px; }
  .story-layout { gap: 38px 60px; }
  .contact-layout { grid-template-columns: minmax(0, .8fr) minmax(480px, 1.2fr); gap: 52px; }
  .contact-card { padding: 30px; grid-template-columns: minmax(0, 1fr) 150px; }
  .qr { padding-left: 24px; }
  .qr img { width: 125px; height: 125px; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 68px; }
  .section-shell, .nav-shell, .hero-shell { width: min(calc(100% - 36px), var(--shell)); }
  .site-header { height: 68px; }
  .nav-shell { display: flex; justify-content: space-between; }
  .brand { font-size: 18px; }
  .brand img { width: 38px; height: 38px; }
  .header-cta { display: none; }
  .nav-toggle { display: block; position: relative; z-index: 2; width: 44px; height: 44px; padding: 11px 8px; border: 0; background: transparent; cursor: pointer; }
  .nav-toggle span { display: block; height: 1px; background: currentColor; margin: 7px 0; transition: .25s; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav-menu { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 20px; color: #fff; background: var(--forest-deep); opacity: 0; visibility: hidden; transition: .25s; }
  .nav-menu.open { opacity: 1; visibility: visible; }
  .nav-menu a { height: auto; font: 400 34px/1.5 var(--serif); }
  .nav-menu a::after { bottom: 0; }
  .hero { min-height: 720px; height: 100svh; max-height: 880px; }
  .hero-image { left: 0; width: 100%; }
  .hero-image::before { display: none; }
  .hero::after { background: linear-gradient(180deg, rgba(5,28,19,.2) 0%, rgba(5,28,19,.38) 35%, rgba(5,28,19,.93) 100%); }
  .hero-shell { justify-content: flex-end; padding-bottom: 154px; }
  .hero-copy { width: 100%; padding: 0; }
  .hero h1 { font-size: clamp(48px, 12vw, 68px); }
  .hero-copy > p { margin-top: 20px; font-size: 15px; line-height: 1.8; }
  .hero-actions { margin-top: 25px; }
  .hero-foot { bottom: 20px; grid-template-columns: repeat(2, 1fr) 104px; }
  .hero-promise { min-height: 48px; }
  .hero-promise:nth-child(3), .hero-promise:nth-child(4) { display: none; }
  .hero-controls { gap: 7px; }
  .hero-controls button { width: 34px; height: 34px; }
  .slide-count { display: none; }
  .manifesto, .about, .categories, .story, .quality { padding: 88px 0; }
  .manifesto-grid { grid-template-columns: 1fr; gap: 24px; }
  .manifesto h2 { font-size: 48px; }
  .manifesto-copy { max-width: 520px; }
  .about-heading { grid-template-columns: 1fr; gap: 20px; margin-bottom: 44px; }
  .about-heading h2 { font-size: 56px; }
  .about-heading > p:last-child { max-width: 520px; }
  .about-layout { grid-template-columns: 1fr; gap: 48px; }
  .about-media img { height: min(68vw, 560px); }
  .about-media figcaption { right: 18px; bottom: 18px; }
  .categories-heading { align-items: start; flex-direction: column; gap: 18px; margin-bottom: 40px; }
  .categories-heading h2 { font-size: 56px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 270px; }
  .category-card, .category-card.category-feature, .category-card.category-wide { grid-column: span 1; grid-row: span 1; }
  .category-feature div { left: 24px; bottom: 21px; }
  .category-feature h3 { font-size: 25px; }
  .story-layout { grid-template-columns: 1fr; gap: 18px; }
  .story-intro h2 { font-size: 55px; }
  .story-body { padding-top: 12px; max-width: 600px; }
  .stats { grid-column: auto; grid-template-columns: 1fr 1fr; margin-top: 36px; }
  .stats div:nth-child(2) { border-right: 0; }
  .stats div:nth-child(n+3) { margin-top: 20px; padding-top: 24px; border-top: 1px solid var(--line); }
  .quality-heading { align-items: start; flex-direction: column; }
  .quality-heading h2 { text-align: left; font-size: 48px; }
  .quality-steps { grid-template-columns: 1fr 1fr; }
  .quality-steps li { min-height: 220px; }
  .quality-steps li:nth-child(2) { border-right: 0; }
  .quality-steps li:nth-child(n+3) { border-top: 1px solid rgba(18,61,44,.2); }
  .contact, .contact-layout { min-height: auto; }
  .contact-backdrop { inset: 0; opacity: .18; }
  .contact-layout { padding: 88px 0; grid-template-columns: 1fr; gap: 48px; }
  .contact-copy { max-width: 610px; }
  .contact-card { max-width: 650px; }
}

@media (max-width: 560px) {
  .section-shell, .nav-shell, .hero-shell { width: calc(100% - 36px); }
  .hero { min-height: 690px; max-height: 820px; }
  .hero-image { height: 58%; }
  .hero::after { background: linear-gradient(180deg, rgba(5,28,19,.08) 0%, rgba(5,28,19,.3) 34%, var(--forest-deep) 60%); }
  .hero-shell { padding-bottom: 124px; }
  .hero h1 { font-size: 46px; line-height: 1.13; letter-spacing: -.045em; }
  .hero-copy > p br { display: none; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 13px; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { align-self: center; }
  .hero-foot { grid-template-columns: 1fr 1fr 82px; }
  .hero-promise { gap: 8px; }
  .hero-promise strong { font-size: 11px; }
  .manifesto h2, .about-heading h2, .categories-heading h2, .story-intro h2, .quality-heading h2 { font-size: 41px; }
  .manifesto { padding-top: 78px; }
  .manifesto-copy { font-size: 14px; }
  .about-media img { height: 74vw; min-height: 290px; }
  .about-media figcaption { right: 12px; bottom: 12px; width: auto; max-width: 220px; padding: 16px 18px; }
  .reason { grid-template-columns: 34px minmax(0, 1fr); gap: 14px; padding: 25px 0; }
  .reason h3 { font-size: 21px; }
  .category-grid { grid-template-columns: 1fr; grid-auto-rows: 260px; gap: 12px; }
  .category-card.category-feature { min-height: 340px; }
  .stats { gap: 0; }
  .stats div, .stats div:not(:first-child) { padding-left: 0; padding-right: 12px; }
  .stats div:nth-child(even) { padding-left: 20px; }
  .stats dt { font-size: 39px; }
  .quality-steps { grid-template-columns: 1fr; }
  .quality-steps li, .quality-steps li:not(:first-child) { min-height: 170px; padding: 22px 0; border-right: 0; border-bottom: 1px solid rgba(18,61,44,.2); }
  .quality-steps li:nth-child(n+3) { border-top: 0; }
  .quality-steps li:last-child { border-bottom: 0; }
  .contact h2 { font-size: 40px; }
  .contact-actions { align-items: stretch; flex-direction: column; gap: 14px; }
  .contact-actions .text-link { align-self: flex-start; }
  .contact-card { padding: 24px; grid-template-columns: 1fr; gap: 24px; }
  .qr { padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--line); flex-direction: row; align-items: center; gap: 18px; }
  .qr img { width: 112px; height: 112px; margin: 0; }
  .qr p { margin: 0; text-align: left; }
  .footer-main, .footer-legal { align-items: center; flex-direction: column; text-align: center; }
  .footer-main { gap: 12px; }
  .footer-main p { margin: 0; }
  .footer-legal { gap: 12px; }
  .footer-legal div { flex-wrap: wrap; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .hero-slide, .category-card img { transition: none; }
  .js .reveal { opacity: 1; transform: none; }
}