:root {
  --ink: #102a35;
  --navy: #071b2a;
  --navy-2: #0b3140;
  --green: #0b6657;
  --green-2: #154c45;
  --gold: #c99b49;
  --gold-soft: #ecd49b;
  --paper: #f4f0e6;
  --paper-2: #fbf9f3;
  --line: rgba(16, 42, 53, 0.16);
  --muted: #5c6a6e;
  --white: #fff;
  --max: 1240px;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "STHeiti", "Microsoft YaHei", sans-serif;
  --latin: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper-2); font-family: var(--sans); font-size: 16px; font-weight: 400; line-height: 1.78; letter-spacing: .008em; font-kerning: normal; font-feature-settings: "kern" 1, "liga" 1; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.022em; text-wrap: balance; }
h2 { font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.16; }
p { text-wrap: pretty; }
strong, b { font-weight: 600; }

.draft-ribbon { position: fixed; z-index: 100; right: 16px; bottom: 16px; padding: 6px 12px; color: #fff; background: rgba(139, 35, 35, .92); border: 1px solid rgba(255,255,255,.35); border-radius: 999px; font-size: 12px; letter-spacing: .08em; box-shadow: 0 8px 25px rgba(0,0,0,.16); }
.site-header { position: absolute; z-index: 20; top: 0; left: 50%; width: min(calc(100% - 40px), var(--max)); height: 88px; transform: translateX(-50%); display: flex; align-items: center; gap: 34px; color: #fff; border-bottom: 1px solid rgba(255,255,255,.2); }
.site-header.solid { position: relative; left: auto; transform: none; width: 100%; max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2)); color: var(--ink); background: var(--paper-2); border-color: var(--line); }
.brand { margin-right: auto; }
.brand img { width: 112px; max-height: 46px; object-fit: contain; }
.site-header:not(.solid) .brand img { width: 120px; filter: drop-shadow(0 3px 12px rgba(0,0,0,.32)); }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { position: relative; text-decoration: none; font-size: 14px; font-weight: 600; letter-spacing: .035em; }
.nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -9px; height: 2px; background: var(--gold); transition: right .25s ease; }
.nav a:hover::after, .nav a[aria-current="page"]::after { right: 0; }
.header-cta { padding: 10px 18px; text-decoration: none; color: var(--navy); background: var(--gold-soft); border-radius: 999px; font-size: 14px; font-weight: 700; }
.menu-button { display: none; color: inherit; border: 1px solid currentColor; background: transparent; border-radius: 999px; padding: 7px 14px; }

.hero { position: relative; min-height: 900px; display: grid; align-items: end; overflow: hidden; color: #fff; background: var(--navy); }
.hero-bg, .contact-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-bg { object-position: 58% center; filter: saturate(.92) contrast(1.02); transform: scale(1.02); }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(4,18,28,.97) 0%, rgba(4,25,34,.86) 48%, rgba(4,25,34,.34) 100%), linear-gradient(0deg, rgba(6,30,41,.96), transparent 55%); }
.hero-grid { position: relative; z-index: 1; width: min(calc(100% - 48px), var(--max)); margin: 0 auto 90px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 90px; align-items: end; }
.eyebrow, .overline { margin-bottom: 22px; color: var(--gold-soft); font-family: var(--latin); font-size: 12px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { max-width: 850px; margin-bottom: 30px; font-size: clamp(3.25rem, 5vw, 4.7rem); line-height: 1.07; font-weight: 600; }
.hero h1 span { display: block; white-space: nowrap; }
.hero-lead { max-width: 760px; margin-bottom: 36px; color: rgba(255,255,255,.82); font-size: clamp(1rem, 1.6vw, 1.28rem); line-height: 1.9; letter-spacing: .025em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; text-decoration: none; font-weight: 700; }
.button-primary { color: var(--navy); background: var(--gold-soft); }
.button-ghost { color: #fff; border: 1px solid rgba(255,255,255,.44); background: rgba(255,255,255,.06); }
.button-light { color: var(--navy); background: #fff; }
.hero-manifesto { padding: 34px; border: 1px solid rgba(255,255,255,.2); background: rgba(7,32,42,.5); backdrop-filter: blur(14px); }
.hero-manifesto > span { color: var(--gold-soft); font-family: var(--latin); font-size: 12px; letter-spacing: .16em; }
.hero-manifesto > strong { display: block; margin: 16px 0 24px; font-family: var(--serif); font-size: 1.65rem; font-weight: 600; line-height: 1.45; letter-spacing: -.015em; }
.hero-manifesto ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 0; padding: 20px 0 0; border-top: 1px solid rgba(255,255,255,.18); list-style: none; color: rgba(255,255,255,.78); font-size: 14px; }

.definition-section, .audience-section, .knowledge-section, .faq-preview { max-width: var(--max); margin: 0 auto; padding: 120px 24px; }
.section-label { margin-bottom: 44px; color: var(--green); font-family: var(--latin); font-size: 12px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; }
.section-label.light { color: var(--gold-soft); }
.definition-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 90px; align-items: start; }
.definition-grid h2 { margin-bottom: 0; }
.definition-answer { padding-top: 40px; color: #3a4a4f; font-size: 1.07rem; }
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 80px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pillars article { min-height: 240px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pillars span { color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: .15em; }
.pillars h3 { margin: 50px 0 12px; font-family: var(--serif); font-size: 1.55rem; }
.pillars p { margin: 0; color: var(--muted); font-size: 14px; }

.standard-section { display: grid; grid-template-columns: 1fr 1fr; min-height: 760px; background: var(--paper); }
.standard-visual { position: relative; min-height: 620px; overflow: hidden; }
.standard-visual > img { width: 100%; height: 100%; object-fit: cover; }
.image-caption { position: absolute; left: 28px; bottom: 28px; padding: 10px 16px; color: #fff; background: rgba(7,27,42,.85); font-size: 13px; }
.copyright-showcase { padding: 22px; background: linear-gradient(145deg, #071b2a, #0b3140); }
.art-gallery { height: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: minmax(0, 1.55fr) repeat(2, minmax(0, 1fr)); gap: 12px; }
.art-gallery figure { position: relative; min-height: 0; margin: 0; overflow: hidden; background: #f8f5eb; border: 1px solid rgba(255,255,255,.14); }
.art-gallery .art-feature { grid-column: 1 / 3; grid-row: 1; }
.art-gallery img { width: 100%; height: 100%; padding: 6px; object-fit: contain; transition: transform .45s ease; }
.art-gallery .art-feature img { padding: 10px; object-position: center; }
.art-gallery figure:hover img { transform: scale(1.025); }
.art-gallery figcaption { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 24px 16px 12px; color: #fff; background: linear-gradient(0deg, rgba(7,27,42,.88), transparent); font-size: 12px; }
.art-gallery figcaption span { color: var(--gold-soft); letter-spacing: .08em; }
.art-gallery figcaption strong { font-family: var(--serif); font-size: 15px; }
.copyright-showcase .image-caption { top: 34px; right: 34px; bottom: auto; left: auto; }
.standard-copy { align-self: center; max-width: 720px; padding: 80px clamp(34px, 7vw, 110px); }
.standard-copy h2 { font-size: clamp(2.2rem, 4vw, 4.2rem); }
.standard-copy .lead { color: #3f5055; font-size: 1.08rem; }
.principle-list { margin: 36px 0; }
.principle-list article { display: grid; grid-template-columns: 90px 1fr; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); }
.principle-list strong { color: var(--green); }
.principle-list p { margin: 0; color: var(--muted); }
.text-link { display: inline-block; margin-top: 8px; color: var(--green); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 5px; }

.operations-section { padding: 120px max(24px, calc((100vw - var(--max)) / 2)); color: #fff; background: linear-gradient(135deg, var(--navy) 0%, var(--green-2) 100%); }
.operations-section .section-head { max-width: 980px; grid-template-columns: minmax(0, 1fr); gap: 24px; align-items: start; }
.operations-section .section-label { margin-bottom: 30px; }
.operations-section .section-head h2 { max-width: 920px; font-size: clamp(2.55rem, 4.6vw, 4.3rem); line-height: 1.12; text-wrap: balance; }
.operations-section .section-head > p { max-width: 760px; padding-top: 0; font-size: 1.05rem; line-height: 1.9; }
.section-head { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); gap: clamp(44px, 7vw, 88px); align-items: start; }
.section-head h2 { margin-bottom: 0; }
.section-head > p { max-width: 560px; margin-bottom: 0; padding-top: .45rem; color: rgba(255,255,255,.68); }
.section-head.dark-text > p { color: var(--muted); }
.operation-flow { display: grid; grid-template-columns: repeat(5, 1fr); margin: 74px 0 45px; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.2); border-left: 1px solid rgba(255,255,255,.2); }
.operation-flow li { min-height: 270px; padding: 28px 24px; border-right: 1px solid rgba(255,255,255,.2); border-bottom: 1px solid rgba(255,255,255,.2); }
.operation-flow span { color: var(--gold-soft); font-size: 12px; }
.operation-flow strong { display: block; margin: 58px 0 12px; font-family: var(--serif); font-size: 1.3rem; }
.operation-flow p { margin: 0; color: rgba(255,255,255,.64); font-size: 14px; }

.audience-grid, .knowledge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 64px; }
.audience-grid article { padding: 34px; background: #fff; border: 1px solid var(--line); box-shadow: 0 18px 45px rgba(30,45,44,.05); }
.role { color: var(--gold); font-family: var(--latin); font-size: 11px; font-weight: 600; letter-spacing: .18em; }
.audience-grid h3 { margin: 50px 0 12px; font-family: var(--serif); font-size: 1.8rem; }
.audience-grid p { min-height: 84px; color: var(--muted); }
.audience-grid a { color: var(--green); font-weight: 700; }

.knowledge-section { max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2)); background: var(--paper); }
.knowledge-grid a { min-height: 300px; padding: 34px; text-decoration: none; color: #fff; background: var(--navy); transition: transform .25s ease, background .25s ease; }
.knowledge-grid a:nth-child(2) { background: var(--green-2); }
.knowledge-grid a:nth-child(3) { color: var(--ink); background: var(--gold-soft); }
.knowledge-grid a:hover { transform: translateY(-6px); }
.knowledge-grid span { font-family: var(--latin); font-size: 11px; font-weight: 600; letter-spacing: .18em; }
.knowledge-grid strong { display: block; margin: 70px 0 16px; font-family: var(--serif); font-size: 1.55rem; line-height: 1.35; }
.knowledge-grid p { margin: 0; opacity: .72; }

.faq-preview { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.accordion details { border-top: 1px solid var(--line); }
.accordion details:last-child { border-bottom: 1px solid var(--line); }
.accordion summary { position: relative; padding: 22px 48px 22px 0; cursor: pointer; list-style: none; font-weight: 700; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; position: absolute; right: 8px; top: 18px; color: var(--green); font-size: 24px; font-weight: 400; }
.accordion details[open] summary::after { content: "−"; }
.accordion details p { max-width: 760px; padding: 0 46px 20px 0; color: var(--muted); }

.contact-section { position: relative; min-height: 590px; display: grid; place-items: center; overflow: hidden; color: #fff; text-align: center; }
.contact-bg { object-position: 58% center; filter: saturate(.82) contrast(1.02); }
.contact-shade { position: absolute; inset: 0; background: rgba(6,27,39,.88); }
.contact-inner { position: relative; z-index: 1; width: min(calc(100% - 40px), 880px); padding: 90px 0; }
.contact-inner > img { width: 160px; margin: 0 auto 42px; }
.contact-inner h2 { margin-bottom: 24px; font-size: clamp(2.8rem, 5vw, 5rem); }
.contact-inner > p:not(.eyebrow) { color: rgba(255,255,255,.72); font-size: 1.05rem; }
.contact-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 22px; margin-top: 34px; }
.contact-actions span { color: rgba(255,255,255,.64); font-size: 13px; }

.site-footer { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 60px; padding: 56px max(24px, calc((100vw - var(--max)) / 2)); color: rgba(255,255,255,.68); background: #061722; font-size: 13px; }
.site-footer img { width: 130px; margin-bottom: 18px; }
.site-footer strong, .site-footer a { color: #fff; }
.site-footer p { margin-bottom: 0; }
.site-footer.compact { grid-template-columns: 1fr 1fr; }

.page-hero { padding: 120px max(24px, calc((100vw - var(--max)) / 2)) 80px; color: #fff; background: linear-gradient(90deg, rgba(4,18,28,.97), rgba(6,31,39,.78)), url("./assets/hero-guangfu-pmg68epq.png") 58% center / cover no-repeat; }
.page-hero h1 { margin-bottom: 24px; font-family: var(--serif); font-size: clamp(3.4rem, 7vw, 6.4rem); line-height: 1; }
.page-hero > p:not(.eyebrow) { max-width: 800px; color: rgba(255,255,255,.7); font-size: 1.05rem; }
.topic-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.topic-nav a { padding: 9px 15px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; text-decoration: none; font-size: 13px; }
.faq-library { max-width: var(--max); margin: 0 auto; padding: 60px 24px 120px; }
.faq-group { display: grid; grid-template-columns: .42fr 1fr; gap: 70px; padding: 70px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 24px; }
.faq-group-title { display: flex; gap: 22px; }
.faq-group-title > span { color: var(--gold); font-family: var(--latin); font-size: 12px; font-weight: 600; }
.faq-group-title p { margin-bottom: 8px; color: var(--green); font-family: var(--latin); font-size: 11px; font-weight: 600; letter-spacing: .18em; }
.faq-group-title h2 { margin-bottom: 0; font-size: clamp(1.8rem, 3vw, 2.8rem); }
.source-note { max-width: 1100px; margin: -50px auto 100px; padding: 28px 34px; background: var(--paper); border-left: 4px solid var(--gold); }
.source-note strong { display: block; margin-bottom: 8px; }
.source-note p { margin: 0; color: var(--muted); font-size: 14px; }

.article-hero { min-height: 650px; display: grid; grid-template-columns: 1.05fr .95fr; color: #fff; background: var(--navy); }
.article-hero > div:first-child { align-self: center; padding: 90px max(40px, calc((100vw - var(--max)) / 2)) 90px max(24px, calc((100vw - var(--max)) / 2)); }
.article-hero h1 { margin-bottom: 30px; font-family: var(--serif); font-size: clamp(3.4rem, 6vw, 6rem); line-height: 1; }
.operations-hero h1 { font-size: clamp(3rem, 5vw, 4.6rem); line-height: 1.08; }
.operations-hero h1 span { display: block; white-space: nowrap; }
.article-hero p:not(.eyebrow) { max-width: 680px; color: rgba(255,255,255,.7); }
.article-hero > img { width: 100%; height: 100%; min-height: 650px; object-fit: cover; }
.article-hero-visual { position: relative; min-height: 650px; display: grid; place-items: center; overflow: hidden; isolation: isolate; background: var(--navy); }
.article-hero-visual::before { content: ""; position: absolute; z-index: -1; inset: -10%; background: linear-gradient(rgba(5,27,38,.56), rgba(8,49,57,.78)), url("./assets/hero-guangfu-pmg68epq.png") 54% center / cover no-repeat; filter: blur(12px) saturate(.82); transform: scale(1.08); }
.article-hero-visual::after { content: ""; position: absolute; z-index: -1; inset: 0; background: radial-gradient(circle at 50% 45%, rgba(236,212,155,.16), transparent 58%); }
.article-hero-visual img { width: min(88%, 760px); height: auto; max-height: 82%; object-fit: contain; border: 1px solid rgba(255,255,255,.42); box-shadow: 0 28px 70px rgba(0,0,0,.38); }
.listed-products-showcase { min-height: 650px; display: grid; grid-template-rows: auto minmax(0, 1fr); gap: 18px; padding: 28px; overflow: hidden; background: linear-gradient(145deg, #e8e2d5, #f8f5ed 56%, #ddd3bf); }
.listed-products-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding-bottom: 16px; color: var(--ink); border-bottom: 1px solid rgba(16,42,53,.18); }
.listed-products-head span { color: var(--green); font-size: 10px; font-weight: 700; letter-spacing: .16em; }
.listed-products-head strong { font-family: var(--serif); font-size: 1.25rem; }
.listed-products-grid { min-height: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(3, minmax(0, 1fr)); gap: 10px; }
.listed-products-grid article { min-width: 0; display: grid; grid-template-rows: minmax(0, 1fr) auto; overflow: hidden; background: rgba(255,255,255,.82); border: 1px solid rgba(16,42,53,.12); box-shadow: 0 14px 34px rgba(16,42,53,.08); }
.listed-products-grid img { width: 100%; height: 100%; min-height: 0; padding: 5px; object-fit: contain; background: #f7f7f5; }
.listed-products-grid article > div { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 7px; padding: 8px 9px; color: var(--ink); border-top: 1px solid rgba(16,42,53,.1); }
.listed-products-grid article span { color: var(--gold); font-size: 10px; }
.listed-products-grid article strong { overflow: hidden; font-family: var(--serif); font-size: 14px; white-space: nowrap; text-overflow: ellipsis; }
.listed-products-grid article em { grid-column: 2; color: var(--green); font-size: 9px; font-style: normal; font-weight: 700; }
.trust-hero { background: linear-gradient(135deg, var(--navy), var(--green-2)); }
.article-body { max-width: var(--max); margin: 0 auto; padding: 100px 24px; }
.article-body > section { padding: 80px 0; border-bottom: 1px solid var(--line); }
.article-body > section:first-child { padding-top: 0; }
.answer-block { max-width: 980px; }
.answer-block .overline { color: var(--green); }
.answer-block h2 { font-size: clamp(2.4rem, 5vw, 4.7rem); }
.answer-block > p:last-child { max-width: 800px; color: var(--muted); font-size: 1.08rem; }
.two-column { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.two-column h2 { margin-bottom: 0; }
.two-column > div { padding-top: 30px; color: var(--muted); }
.method-section h2 { max-width: 760px; }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 55px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.method-grid article { min-height: 260px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.method-grid span { color: var(--gold); font-size: 11px; letter-spacing: .14em; }
.method-grid h3 { margin: 52px 0 12px; font-family: var(--serif); font-size: 1.5rem; }
.method-grid p { color: var(--muted); font-size: 14px; }
.ip-section { display: grid; grid-template-columns: .9fr 1.1fr; padding: 0 !important; color: #fff; background: var(--navy); border: 0 !important; }
.ip-section img { width: 100%; height: 100%; min-height: 540px; object-fit: cover; }
.ip-section > div { align-self: center; padding: 70px; }
.ip-section p, .ip-section li { color: rgba(255,255,255,.7); }
.boundary-grid, .layer-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 50px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.boundary-grid article, .layer-grid article { padding: 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.boundary-grid strong { display: block; margin-bottom: 18px; color: var(--green); font-family: var(--serif); font-size: 1.4rem; }
.boundary-grid p, .layer-grid p { margin: 0; color: var(--muted); }
.layer-grid article { min-height: 340px; }
.layer-grid span { color: var(--gold); font-size: 11px; letter-spacing: .14em; }
.layer-grid h2 { margin: 42px 0 8px; font-size: 2.4rem; }
.layer-grid strong { display: block; margin-bottom: 20px; color: var(--green); }
.trust-process { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(44px, 5vw, 72px); margin-inline: calc((var(--max) - 100vw) / 2); padding-inline: max(24px, calc((100vw - var(--max)) / 2)) !important; color: #fff; background: linear-gradient(135deg, var(--navy), var(--green-2)); border: 0 !important; }
.trust-process h2 { font-size: clamp(2.1rem, 3.2vw, 2.9rem); line-height: 1.2; }
.trust-process h2 span { display: block; white-space: nowrap; }
.trust-process ol { margin: 0; padding: 0; list-style: none; }
.trust-process li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.2); }
.trust-process li > span { color: var(--gold-soft); font-size: 12px; }
.trust-process strong { font-family: var(--serif); font-size: 1.3rem; }
.trust-process p { margin: 4px 0 0; color: rgba(255,255,255,.65); }

@media (max-width: 980px) {
  .site-header { width: calc(100% - 28px); height: 74px; }
  .site-header.solid { width: 100%; padding-inline: 18px; }
  .menu-button { display: block; }
  .header-cta { display: none; }
  .nav { position: absolute; top: 68px; right: 0; min-width: 210px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px; color: var(--ink); background: #fff; border: 1px solid var(--line); box-shadow: 0 18px 50px rgba(0,0,0,.16); }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .hero { min-height: 840px; }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; margin-bottom: 54px; }
  .hero-manifesto { max-width: 580px; }
  .definition-grid, .section-head, .faq-preview, .two-column, .trust-process { grid-template-columns: 1fr; gap: 40px; }
  .section-head { gap: 24px; }
  .section-head > p { max-width: 760px; padding-top: 0; }
  .definition-answer { padding-top: 0; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .standard-section { grid-template-columns: 1fr; }
  .standard-visual { min-height: 520px; }
  .copyright-showcase { min-height: 900px; }
  .operation-flow { grid-template-columns: 1fr 1fr; }
  .audience-grid, .knowledge-grid, .method-grid, .boundary-grid, .layer-grid { grid-template-columns: 1fr 1fr; }
  .faq-group { grid-template-columns: 1fr; gap: 30px; }
  .article-hero { grid-template-columns: 1fr; }
  .article-hero > div:first-child { padding: 80px 24px; }
  .article-hero > img { min-height: 440px; }
  .article-hero-visual { min-height: 500px; }
  .listed-products-showcase { min-height: 760px; }
  .ip-section { grid-template-columns: 1fr; }
  .trust-process { margin-inline: -24px; }
}

@media (max-width: 640px) {
  h2 { font-size: 2.2rem; }
  .hero h1 { font-size: min(9.2vw, 3.2rem); }
  .hero-grid { width: calc(100% - 32px); }
  .hero-manifesto ul { grid-template-columns: 1fr; }
  .definition-section, .audience-section, .knowledge-section, .faq-preview { padding: 82px 18px; }
  .pillars, .operation-flow, .audience-grid, .knowledge-grid, .method-grid, .boundary-grid, .layer-grid { grid-template-columns: 1fr; }
  .pillars article, .operation-flow li { min-height: 190px; }
  .pillars h3, .operation-flow strong { margin-top: 34px; }
  .standard-visual { min-height: 420px; }
  .copyright-showcase { min-height: 760px; padding: 12px; }
  .art-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 2fr repeat(2, 1fr); }
  .art-gallery .art-feature { grid-column: 1 / 3; grid-row: 1; }
  .copyright-showcase .image-caption { top: 22px; right: 22px; }
  .standard-copy { padding: 70px 22px; }
  .principle-list article { grid-template-columns: 1fr; gap: 6px; }
  .operations-section { padding-block: 82px; }
  .operations-section .section-head { gap: 18px; }
  .operations-section .section-label { margin-bottom: 20px; }
  .operations-section .section-head h2 { font-size: clamp(2.1rem, 9vw, 2.45rem); line-height: 1.16; }
  .operations-section .section-head > p { font-size: 1rem; line-height: 1.8; }
  .page-hero { padding-top: 90px; }
  .page-hero h1, .article-hero h1 { font-size: 3.25rem; }
  .operations-hero h1 { font-size: clamp(1.75rem, 7.5vw, 2.5rem); }
  .article-hero-visual { min-height: 360px; }
  .article-hero-visual img { width: 92%; max-height: 78%; }
  .listed-products-showcase { min-height: 660px; gap: 12px; padding: 14px; }
  .listed-products-grid { gap: 7px; }
  .listed-products-grid article > div { grid-template-columns: 1fr; gap: 3px; padding: 7px; }
  .listed-products-grid article span { display: none; }
  .listed-products-grid article strong { font-size: 11px; }
  .listed-products-grid article em { display: none; }
  .trust-process h2 { font-size: clamp(1.5rem, 7.5vw, 2.1rem); }
  .faq-library { padding-inline: 18px; }
  .faq-group { padding: 50px 0; }
  .article-body { padding: 70px 18px; }
  .article-body > section { padding: 60px 0; }
  .method-grid, .boundary-grid, .layer-grid { margin-top: 36px; }
  .ip-section > div { padding: 48px 24px; }
  .site-footer, .site-footer.compact { grid-template-columns: 1fr; gap: 30px; }
  .source-note { margin-inline: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}