:root {
  --paper: #f3f0e9;
  --paper-deep: #e9e3d9;
  --ink: #28251f;
  --muted: #716b61;
  --line: rgba(40, 37, 31, 0.17);
  --wood: #8b6a4d;
  --brown: #3b3028;
  --cream: #f7f3eb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: "Noto Serif SC", "Songti SC", "SimSun", serif; font-weight: 500; letter-spacing: -0.025em; text-wrap: balance; }

.site-header {
  position: sticky; top: 0; z-index: 50; height: 78px; padding: 0 4.5vw;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  background: rgba(243, 240, 233, 0.92); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; width: max-content; flex-direction: column; line-height: 1; }
.header-brand { flex-direction: row; align-items: center; gap: 14px; }
.brand-cn { padding-left: 14px; border-left: 1px solid var(--line); font-family: "Songti SC", "SimSun", serif; font-size: 16px; letter-spacing: .13em; white-space: nowrap; }
.site-logo { display: block; width: 138px; height: auto; }
.brand-mark { font-family: "Songti SC", serif; font-size: 21px; letter-spacing: .18em; }
.brand-sub { margin-top: 7px; font-size: 8px; letter-spacing: .24em; color: var(--muted); }
.desktop-nav { display: flex; gap: 30px; font-size: 13px; }
.desktop-nav a { position: relative; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -5px; height: 1px; background: var(--ink); transition: right .25s ease; }
.desktop-nav a:hover::after { right: 0; }
.nav-cta { justify-self: end; font-size: 13px; border-bottom: 1px solid var(--ink); padding-bottom: 4px; }
.nav-cta span { margin-left: 10px; }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 20px; }
.header-phone { display: inline-flex; align-items: center; gap: 9px; padding: 9px 13px; color: var(--cream); background: var(--brown); font-family: Arial, sans-serif; font-size: 14px; letter-spacing: .035em; transition: background .2s ease, transform .2s ease; }
.header-phone:hover { color: #fff; background: #241e19; transform: translateY(-1px); }
.header-phone strong { font-size: inherit; font-weight: 700; white-space: nowrap; }
.header-consult { font-family: inherit; font-size: 13px; white-space: nowrap; }
.header-consult span { margin-left: 8px; }
.header-phone-link { padding-bottom: 0; border-bottom: 0; font-family: Arial, sans-serif; font-size: 17px; font-weight: 700; letter-spacing: .025em; white-space: nowrap; }
.phone-label { padding-right: 9px; border-right: 1px solid rgba(255,255,255,.28); font-family: "Microsoft YaHei", sans-serif; font-size: 10px; font-weight: 400; letter-spacing: .08em; }

.hero { min-height: min(820px, calc(100vh - 78px)); position: relative; display: grid; grid-template-columns: 46% 54%; overflow: hidden; }
.hero-copy { align-self: center; padding: 7vh 5vw 8vh 8vw; }
.eyebrow { font-size: 10px; letter-spacing: .25em; color: var(--wood); text-transform: uppercase; }
.hero h1 { font-size: clamp(38px, 4.25vw, 62px); line-height: 1.23; margin: 30px 0 24px; }
.hero-text { max-width: 480px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; min-width: 180px; padding: 15px 18px; font-size: 13px; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.primary { color: var(--cream); background: var(--brown); }
.text-link { font-size: 13px; border-bottom: 1px solid var(--line); padding: 10px 0; }
.text-link span { margin-left: 18px; }
.hero-visual { min-height: 560px; position: relative; background: #817364; overflow: hidden; }
.hero-visual::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, transparent 54%, rgba(24,20,17,.54) 100%); pointer-events: none; }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { margin: 0; opacity: 0; visibility: hidden; transform: scale(1.025); transition: opacity 1s ease, visibility 1s ease, transform 6s ease; }
.hero-slide.is-active { opacity: 1; visibility: visible; transform: scale(1); }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 52% center; }
.room-frame { position: absolute; inset: 0; background: linear-gradient(130deg, #dccfbc 0%, #b7a28a 52%, #846c57 100%); }
.room-frame::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, transparent 44%, rgba(255,255,255,.2) 44.2%, transparent 44.8%), linear-gradient(15deg, transparent 55%, rgba(255,244,220,.28) 55.4%, transparent 58%); }
.wall-panel { position: absolute; top: 9%; bottom: 13%; border: 1px solid rgba(54,42,31,.32); background: rgba(242,233,216,.22); }
.panel-one { left: 13%; width: 21%; }
.panel-two { left: 35%; width: 35%; background: rgba(73,51,35,.28); }
.cabinet-lines { position: absolute; top: 9%; right: 7%; bottom: 13%; width: 22%; border: 1px solid rgba(54,42,31,.42); background: repeating-linear-gradient(90deg, rgba(76,53,36,.25) 0, rgba(76,53,36,.25) 32%, rgba(35,27,21,.4) 32.5%, rgba(35,27,21,.4) 33%); }
.shelf { position: absolute; right: 8%; top: 28%; width: 20%; height: 22%; border-top: 12px solid rgba(48,35,26,.7); border-bottom: 12px solid rgba(48,35,26,.7); }
.shelf span { position: absolute; bottom: 0; width: 24px; height: 54px; background: rgba(238,226,202,.45); border-radius: 20px 20px 4px 4px; }
.shelf span:last-child { left: 35px; height: 34px; }
.table-shape { position: absolute; right: 5%; bottom: 4%; width: 42%; height: 16%; background: #5f4737; transform: perspective(300px) rotateX(63deg) skewX(-8deg); box-shadow: 0 35px 0 -28px #403127; }
.visual-note { position: absolute; z-index: 2; left: 8%; bottom: 6%; color: #fff; }
.visual-note span, .visual-note small { font-size: 10px; letter-spacing: .12em; opacity: .82; }
.visual-note p { margin: 4px 0 0; font-family: "Songti SC", serif; font-size: 22px; }
.visual-note small { display: block; margin-top: 2px; }
.hero-controls { position: absolute; z-index: 3; right: 6%; bottom: 6%; display: flex; align-items: center; gap: 12px; }
.hero-arrow { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid rgba(255,255,255,.42); border-radius: 50%; color: #fff; background: rgba(24,20,17,.18); backdrop-filter: blur(8px); cursor: pointer; transition: background .25s ease, border-color .25s ease, transform .25s ease; }
.hero-arrow:hover { background: rgba(24,20,17,.52); border-color: rgba(255,255,255,.78); transform: scale(1.06); }
.hero-dots { display: flex; align-items: center; gap: 7px; }
.hero-dot { width: 6px; height: 6px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.4); cursor: pointer; transition: width .3s ease, border-radius .3s ease, background .3s ease; }
.hero-dot.is-active { width: 22px; border-radius: 6px; background: #fff; }
.hero-index { position: absolute; left: 4vw; bottom: 3vh; writing-mode: vertical-rl; font-size: 9px; letter-spacing: .2em; color: var(--muted); }

.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); padding: 22px 6vw; background: var(--cream); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-strip div { display: flex; flex-direction: column; padding-left: 24px; border-left: 1px solid var(--line); }
.trust-strip div:first-child { border-left: none; }
.trust-strip strong { font-family: "Songti SC", serif; font-size: 17px; font-weight: 500; }
.trust-strip span { color: var(--muted); font-size: 11px; }
.section-pad { padding: 104px 8vw; }
.section-label { display: flex; align-items: center; gap: 12px; font-size: 11px; letter-spacing: .16em; color: var(--muted); white-space: nowrap; }
.section-label span { display: inline-grid; place-items: center; width: 24px; height: 24px; border: 1px solid currentColor; border-radius: 50%; font-size: 8px; }
.section-label.light { color: rgba(255,255,255,.55); }
.intro-main { display: grid; grid-template-columns: 1.2fr .8fr; gap: 8vw; align-items: end; margin: 50px 0 68px; }
.big-question { margin: 0; font-family: "Songti SC", serif; font-size: clamp(32px, 3.55vw, 52px); line-height: 1.4; letter-spacing: -.02em; text-wrap: balance; }
.intro-answer { color: var(--muted); }
.intro-answer p:last-child { margin-bottom: 0; }
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.pain-card { min-height: 188px; padding: 23px 20px; border-right: 1px solid var(--line); }
.pain-card:last-child { border-right: none; }
.pain-card > span { color: var(--wood); font-size: 10px; }
.pain-card h3 { margin: 38px 0 8px; font-family: "Songti SC", serif; font-size: 21px; font-weight: 500; }
.pain-card p { color: var(--muted); font-size: 13px; }

.solutions { background: var(--brown); color: var(--cream); }
.section-head { display: grid; grid-template-columns: .52fr 1.48fr; gap: 7vw; }
.section-head h2, .integration h2, .materials h2, .about h2, .contact h2 { font-size: clamp(29px, 3.35vw, 49px); line-height: 1.32; margin: 0 0 20px; }
.section-head > div:last-child > p { max-width: 490px; color: var(--muted); }
.solutions .section-head > div:last-child > p, .dark-head > div:last-child > p { color: rgba(255,255,255,.55); }
.space-list { margin-top: 62px; border-top: 1px solid rgba(255,255,255,.18); }
.space-row { display: grid; grid-template-columns: 52px 1fr 1.2fr 1.5fr 26px; gap: 20px; align-items: center; min-height: 90px; border-bottom: 1px solid rgba(255,255,255,.18); transition: background .2s ease, padding .2s ease; }
.space-no { color: rgba(255,255,255,.4); font-size: 10px; }
.space-row h3 { margin: 0; font-family: "Songti SC", serif; font-size: 20px; font-weight: 500; }
.space-row p { margin: 0; font-size: 12px; color: rgba(255,255,255,.58); }

.integration { display: grid; grid-template-columns: 1.05fr .95fr; gap: 8vw; align-items: center; background: var(--paper-deep); }
.integration-art { height: 520px; position: relative; overflow: hidden; background: #c8b7a1; }
.integration-image { width: 100%; height: 100%; object-fit: cover; object-position: 50% center; display: block; }
.integration-art .image-caption { position: absolute; z-index: 2; left: 22px; bottom: 18px; top: auto; margin: 0; padding: 7px 10px; color: rgba(255,255,255,.8); background: rgba(28,23,19,.48); backdrop-filter: blur(8px); font-size: 8px; letter-spacing: .16em; }
.integration-art > div { position: absolute; bottom: 0; border: 1px solid rgba(45,34,27,.35); }
.arch-door { left: 9%; top: 13%; width: 25%; background: #8a6b50; }
.arch-wall { left: 34%; top: 7%; width: 25%; background: #ded3c2; }
.arch-cabinet { right: 7%; top: 19%; width: 34%; background: repeating-linear-gradient(90deg, #6c5140 0, #6c5140 32%, #49372d 33%, #49372d 34%); }
.integration-art span { position: relative; top: 28px; margin-left: 11%; color: rgba(255,255,255,.7); font-size: 9px; letter-spacing: .17em; }
.integration-copy > p { color: var(--muted); margin: 24px 0; max-width: 560px; }
.integration-copy ul { list-style: none; padding: 0; margin: 0 0 22px; border-top: 1px solid var(--line); }
.integration-copy li { display: flex; justify-content: space-between; gap: 18px; padding: 17px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.integration-copy li span { color: var(--ink); font-size: 14px; }
.integration-copy small { color: var(--muted); }

.process { background: #20201d; color: var(--cream); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 60px; border-top: 1px solid rgba(255,255,255,.15); border-left: 1px solid rgba(255,255,255,.15); }
.process-grid article { min-height: 248px; padding: 22px; border-right: 1px solid rgba(255,255,255,.15); border-bottom: 1px solid rgba(255,255,255,.15); }
.process-grid span { color: rgba(255,255,255,.35); font-size: 10px; }
.process-grid h3 { margin: 16px 0 9px; font-family: "Songti SC", serif; font-size: 20px; font-weight: 500; }
.process-grid p { color: rgba(255,255,255,.5); font-size: 12px; }
.process-icon { position: relative; display: block; width: 42px; height: 42px; margin-top: 25px; border: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.72); font-style: normal; transition: color .35s ease, border-color .35s ease, background .35s ease, transform .35s ease; }
.process-icon::before, .process-icon::after { content: ""; position: absolute; }
.icon-talk::before { left: 10px; top: 10px; width: 20px; height: 14px; border: 1px solid currentColor; border-radius: 2px; }
.icon-talk::after { left: 15px; top: 16px; width: 2px; height: 2px; border-radius: 50%; background: currentColor; box-shadow: 5px 0 currentColor, 10px 0 currentColor; }
.icon-measure::before { left: 8px; top: 19px; width: 24px; height: 4px; border-top: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(-35deg); }
.icon-measure::after { left: 14px; top: 12px; width: 1px; height: 7px; background: currentColor; transform: rotate(-35deg); box-shadow: 7px 4px currentColor, 14px 8px currentColor; }
.icon-design::before { left: 9px; top: 9px; width: 17px; height: 17px; border: 1px solid currentColor; }
.icon-design::after { left: 16px; top: 16px; width: 16px; height: 16px; border: 1px solid currentColor; background: rgba(32,32,29,.7); }
.icon-quote::before { content: "¥"; inset: 0; display: grid; place-items: center; font-family: Arial, sans-serif; font-size: 20px; }
.icon-confirm::before { content: "✓"; inset: 0; display: grid; place-items: center; font-family: Arial, sans-serif; font-size: 21px; }
.icon-production::before { content: "✦"; inset: 0; display: grid; place-items: center; font-size: 19px; }
.icon-production::after { inset: 9px; border: 1px solid currentColor; border-radius: 50%; }
.icon-install::before { content: "↗"; inset: 0; display: grid; place-items: center; font-family: Arial, sans-serif; font-size: 21px; }
.icon-install::after { left: 9px; right: 9px; bottom: 9px; height: 1px; background: currentColor; }
.icon-service::before { left: 10px; top: 10px; width: 20px; height: 20px; border: 1px solid currentColor; border-radius: 50%; }
.icon-service::after { content: "✓"; left: 15px; top: 10px; font-family: Arial, sans-serif; font-size: 15px; }
.disclaimer { margin: 25px 0 0; color: rgba(255,255,255,.45); font-size: 11px; }

.case-grid { display: grid; grid-template-columns: 1.18fr .82fr; grid-template-rows: 300px 300px; gap: 14px; margin-top: 60px; }
.case-placeholder { position: relative; display: flex; align-items: flex-end; padding: 28px; overflow: hidden; border: 0; background: #d1c5b4; font-family: inherit; text-align: left; cursor: zoom-in; }
.case-placeholder::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(35,28,23,.74), transparent 65%); }
.case-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.case-1 { grid-row: 1 / 3; background: linear-gradient(145deg, #d9cdbc, #8f7761); }
.case-2 { background: linear-gradient(125deg, #9c816a, #d9cebe); }
.case-3 { background: linear-gradient(125deg, #cfc4b5, #766253); }
.case-placeholder > div { position: relative; z-index: 2; color: white; }
.case-placeholder small { font-size: 9px; letter-spacing: .16em; opacity: .7; }
.case-placeholder h3 { margin: 6px 0 3px; font-family: "Songti SC", serif; font-size: 22px; font-weight: 500; }
.case-placeholder p { margin: 0; font-size: 10px; opacity: .65; }
.case-block-carousel { margin-top: 60px; }
.case-block-viewport { overflow: hidden; }
.case-block-track { display: flex; transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.case-block-page { flex: 0 0 100%; margin-top: 0; }
.case-card-hint { position: absolute; z-index: 3; top: 18px; right: 18px; padding: 7px 10px; border: 1px solid rgba(255,255,255,.42); color: #fff; background: rgba(24,19,16,.25); backdrop-filter: blur(7px); font-size: 9px; letter-spacing: .06em; opacity: 0; transform: translateY(-4px); transition: opacity .25s ease, transform .25s ease; }
.case-placeholder:hover .case-card-hint, .case-placeholder:focus-visible .case-card-hint { opacity: 1; transform: translateY(0); }
.case-block-controls { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; padding-top: 20px; }
.case-block-count { display: flex; align-items: baseline; gap: 6px; font-family: Arial, sans-serif; }
.case-block-count strong { font-size: 19px; }
.case-block-count span { color: var(--muted); font-size: 10px; }
.case-block-dots { display: flex; align-items: center; gap: 8px; }
.case-block-dots button { width: 28px; height: 3px; padding: 0; border: 0; background: var(--line); cursor: pointer; transition: width .25s ease, background .25s ease; }
.case-block-dots button.is-active { width: 48px; background: var(--wood); }
.case-block-arrows { justify-self: end; display: flex; gap: 8px; }
.case-block-arrows button { width: 40px; height: 40px; border: 1px solid var(--line); color: var(--ink); background: transparent; font-size: 16px; cursor: pointer; transition: color .2s ease, background .2s ease; }
.case-block-arrows button:hover { color: #fff; background: var(--brown); }

.cases { overflow: hidden; }
.case-lightbox { position: fixed; inset: 0; z-index: 120; display: grid; place-items: center; padding: 34px; }
.case-lightbox[hidden] { display: none; }
.case-lightbox-backdrop { position: absolute; inset: 0; border: 0; background: rgba(12,10,9,.9); backdrop-filter: blur(12px); }
.case-lightbox-panel { position: relative; z-index: 1; display: grid; width: min(1500px, 100%); grid-template-columns: 52px minmax(0, 1fr) 52px; align-items: center; gap: 18px; }
.case-lightbox figure { min-width: 0; margin: 0; text-align: center; }
.case-lightbox-media { position: relative; display: inline-block; max-width: 100%; line-height: 0; }
.case-lightbox-media > img { display: block; width: auto; max-width: 100%; max-height: calc(100vh - 130px); object-fit: contain; }
.case-lightbox figcaption { display: flex; justify-content: space-between; gap: 24px; padding-top: 12px; color: rgba(255,255,255,.78); font-size: 11px; letter-spacing: .08em; }
.case-lightbox figcaption small { color: rgba(255,255,255,.45); font-family: Arial, sans-serif; }
.case-lightbox-meta { display: inline-flex; align-items: center; gap: 18px; }
.case-lightbox-meta a { padding-bottom: 2px; border-bottom: 1px solid rgba(255,255,255,.35); color: rgba(255,255,255,.78); font-size: 9px; transition: color .2s ease, border-color .2s ease; }
.case-lightbox-meta a:hover { color: #fff; border-color: #fff; }
.case-lightbox-close { position: fixed; z-index: 3; top: 22px; right: 24px; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.38); color: #fff; background: transparent; font-size: 27px; cursor: pointer; }
.case-lightbox-arrow { width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.34); color: #fff; background: rgba(255,255,255,.04); font-size: 18px; cursor: pointer; }
.case-lightbox-arrow:hover, .case-lightbox-close:hover { background: rgba(255,255,255,.12); }
.placeholder-lines { position: absolute; inset: 12% 10% 24%; border: 1px solid rgba(255,255,255,.25); }
.placeholder-lines span { position: absolute; left: 32%; top: 0; bottom: 0; width: 1px; background: rgba(255,255,255,.2); }
.placeholder-lines span:nth-child(2) { left: 64%; }
.placeholder-lines span:nth-child(3) { left: 0; top: 58%; right: 0; width: auto; bottom: auto; height: 1px; }

.materials { background: #876c55; color: var(--cream); }
.materials-top { display: grid; grid-template-columns: .85fr 1.15fr; gap: 8vw; align-items: end; }
.materials-title { max-width: 680px; }
.materials-title h2 { margin-top: 40px; }
.materials-visual { margin: 0; }
.materials-visual img { display: block; width: 100%; height: 330px; object-fit: cover; object-position: center; }
.materials-visual figcaption { margin-top: 9px; color: rgba(255,255,255,.5); font-size: 9px; letter-spacing: .08em; }
.materials-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; border-top: 1px solid rgba(255,255,255,.2); }
.materials-grid article { padding: 23px 21px; min-height: 202px; border-right: 1px solid rgba(255,255,255,.2); }
.materials-grid article:last-child { border: 0; }
.materials-grid span { font-size: 10px; opacity: .5; }
.materials-grid h3 { margin: 38px 0 10px; font-family: "Songti SC", serif; font-size: 19px; font-weight: 500; }
.materials-grid p { font-size: 12px; opacity: .65; }

.guide-list { margin-top: 56px; border-top: 1px solid var(--line); }
.guide-list-item { display: grid; grid-template-columns: 62px 1fr 26px; align-items: center; gap: 18px; padding: 23px 6px; border-bottom: 1px solid var(--line); color: inherit; text-decoration: none; transition: background .2s ease; }
.guide-list-item:hover { background: rgba(42,31,24,.04); }
.guide-list-item:hover h3 { color: var(--wood); }
.guide-index { color: var(--wood); font-size: 10px; }
.guide-list small { color: var(--muted); font-size: 10px; }
.guide-list h3 { margin: 4px 0; font-family: "Songti SC", serif; font-weight: 500; font-size: 19px; transition: color .2s ease; }
.guide-list p { margin: 0; color: var(--muted); font-size: 12px; }

.guide-page { min-height: 100vh; background: var(--paper); color: var(--ink); }
.guide-page-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px 4vw; border-bottom: 1px solid var(--line); background: #fff; }
.guide-page-header .brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.guide-page-header .site-logo { width: 118px; }
.guide-page-header nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 11px; }
.guide-page-header nav a { color: var(--muted); text-decoration: none; }
.guide-page-header nav a:hover { color: var(--wood); }
.guide-page-body { max-width: 760px; margin: 0 auto; padding: 56px 4vw 72px; }
.guide-page-body .eyebrow { margin: 0 0 12px; color: var(--wood); font-size: 10px; letter-spacing: .16em; }
.guide-page-body h1 { margin: 0 0 18px; font-family: "Songti SC", serif; font-size: clamp(28px, 5vw, 42px); font-weight: 500; line-height: 1.35; }
.guide-page-lead { margin: 0 0 32px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.guide-page-body h2 { margin: 36px 0 14px; font-family: "Songti SC", serif; font-size: 22px; font-weight: 500; }
.guide-page-body p, .guide-page-body li { color: var(--ink); font-size: 14px; line-height: 1.9; }
.guide-page-body ul, .guide-page-body ol { margin: 0 0 18px; padding-left: 1.25em; }
.guide-page-body li + li { margin-top: 8px; }
.guide-page-cta { margin-top: 42px; padding: 24px; background: rgba(42,31,24,.06); border: 1px solid var(--line); }
.guide-page-cta p { margin: 0 0 14px; color: var(--muted); font-size: 13px; }
.guide-page-cta a { display: inline-block; padding: 12px 20px; color: #fff; background: var(--wood); text-decoration: none; font-size: 12px; }
.guide-page-related { max-width: 760px; margin: 0 auto; padding: 0 4vw 48px; }
.guide-page-related h2 { margin: 0 0 16px; font-family: "Songti SC", serif; font-size: 20px; font-weight: 500; }
.guide-page-related ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.guide-page-related li { border-bottom: 1px solid var(--line); }
.guide-page-related a { display: block; padding: 16px 4px; color: inherit; text-decoration: none; font-size: 14px; }
.guide-page-related a:hover { color: var(--wood); }
.guide-page-footer { margin-top: 24px; }

.about { display: grid; grid-template-columns: 1.2fr .8fr; gap: 10vw; background: #292722; color: var(--cream); }
.about-copy > p { max-width: 640px; color: rgba(255,255,255,.56); }
.about-copy h2 { margin-top: 40px; }
.about-data { border-top: 1px solid rgba(255,255,255,.16); }
.about-data div { padding: 27px 0; border-bottom: 1px solid rgba(255,255,255,.16); display: flex; flex-direction: column; }
.about-data strong { font-family: "Songti SC", serif; font-size: 24px; font-weight: 500; }
.about-data span { color: rgba(255,255,255,.48); font-size: 11px; }
.about-data .pending strong { font-size: 18px; }

.contact { display: grid; grid-template-columns: 1.1fr .9fr; gap: 10vw; align-items: center; background: #a48568; color: #fff; }
.contact-copy > p:not(.eyebrow) { max-width: 540px; color: rgba(255,255,255,.7); }
.light-button { margin-top: 30px; border: 0; background: var(--cream); color: var(--ink); font-family: inherit; cursor: pointer; }
.contact-card { position: relative; padding: 35px; background: rgba(249,246,239,.92); color: var(--ink); }
.contact-card > div:not(.qr-placeholder):not(.qr-code-card) { padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-card small { color: var(--muted); font-size: 10px; letter-spacing: .1em; }
.contact-card p { margin: 4px 0 0; font-size: 14px; }
.phone-link { font-family: Arial, sans-serif; font-size: 18px; letter-spacing: .04em; border-bottom: 1px solid var(--line); }
.phone-link:hover { color: var(--wood); }
.placeholder-contact p { color: var(--wood); }
.qr-placeholder { width: 110px; height: 110px; margin-top: 25px; display: grid; place-items: center; align-content: center; border: 1px dashed var(--wood); color: var(--wood); }
.qr-placeholder span { font-size: 11px; }
.qr-code-card { display: grid; grid-template-columns: 118px 1fr; align-items: center; gap: 22px; margin-top: 26px; padding: 14px 0 0; background: transparent; }
.qr-code-card img { display: block; width: 118px; height: 118px; object-fit: contain; }
.qr-code-card small { display: block; color: var(--wood); font-size: 8px; letter-spacing: .14em; }
.qr-code-card strong { display: block; margin-top: 5px; font-family: "Songti SC", serif; font-size: 17px; font-weight: 500; }
.qr-code-card p { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.6; }
.qr-code-card .qr-advisor { margin-top: 14px; color: var(--ink); font-size: 13px; }
.qr-code-card .qr-advisor .phone-link { font-size: 15px; }

footer { display: grid; grid-template-columns: auto minmax(170px, 1fr) auto; align-items: center; gap: 28px; padding: 34px 4vw; background: #171715; color: rgba(255,255,255,.58); font-size: 9px; }
.footer-brand { color: #fff; }
.footer-brand .site-logo { width: 122px; filter: invert(1); opacity: .9; }
footer p { margin: 0; white-space: nowrap; }
footer > div { justify-self: end; display: flex; flex-wrap: nowrap; align-items: center; justify-content: flex-end; gap: 14px; white-space: nowrap; }
.footer-phone { color: #fff; font-family: Arial, sans-serif; font-size: 13px; font-weight: 700; letter-spacing: .025em; }
.footer-phone span { margin-right: 5px; color: rgba(255,255,255,.55); font-family: "Microsoft YaHei", sans-serif; font-size: 10px; font-weight: 400; }
.footer-phone:hover { color: #fff; }
.icp-link { color: rgba(255,255,255,.58); transition: color .2s ease; }
.icp-link:hover { color: #fff; }
.support-link { color: rgba(255,255,255,.58); transition: color .2s ease; }
.support-link:hover { color: #fff; }

@media (max-width: 1180px) {
  footer { grid-template-columns: auto 1fr; }
  footer > p { display: none; }
}
.join-trigger { display: inline-flex; align-items: center; gap: 14px; padding: 9px 13px; border: 1px solid rgba(255,255,255,.34); color: #fff; background: transparent; font-family: inherit; font-size: 11px; letter-spacing: .08em; cursor: pointer; transition: background .25s ease, border-color .25s ease, transform .25s ease; }
.join-trigger:hover { border-color: #fff; background: rgba(255,255,255,.09); transform: translateY(-2px); }

.modal-open { overflow: hidden; }
.join-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; }
.join-modal[hidden] { display: none; }
.join-backdrop { position: absolute; inset: 0; border: 0; background: rgba(22,19,16,.72); backdrop-filter: blur(9px); cursor: default; }
.join-panel { position: relative; z-index: 1; width: min(720px, 100%); max-height: calc(100vh - 48px); overflow-y: auto; padding: 38px; background: var(--cream); box-shadow: 0 35px 100px rgba(0,0,0,.32); animation: modal-in .35s cubic-bezier(.2,.8,.2,1); }
.join-panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.join-panel-head small { color: var(--wood); font-size: 9px; letter-spacing: .2em; }
.join-panel h2 { margin: 5px 0 0; font-size: 38px; }
.join-close { width: 38px; height: 38px; padding: 0; border: 1px solid var(--line); color: var(--ink); background: transparent; font-size: 25px; line-height: 1; cursor: pointer; transition: color .2s ease, background .2s ease, transform .2s ease; }
.join-close:hover { color: #fff; background: var(--brown); transform: rotate(5deg); }
.join-intro { margin: 22px 0; color: var(--muted); font-size: 13px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.join-form label { display: flex; flex-direction: column; gap: 7px; }
.join-form label > span { color: var(--muted); font-size: 10px; letter-spacing: .08em; }
.join-form input, .join-form select, .join-form textarea { width: 100%; padding: 12px 0; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; outline: none; color: var(--ink); background: transparent; font: inherit; font-size: 14px; transition: border-color .2s ease; }
.join-form textarea { padding: 12px; border: 1px solid var(--line); resize: vertical; }
.join-form input:focus, .join-form select:focus, .join-form textarea:focus { border-color: var(--wood); }
.form-message { margin-top: 20px; }
.form-notice { margin: 15px 0 0; color: var(--muted); font-size: 10px; }
.form-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; }
.form-actions button { min-width: 120px; padding: 12px 16px; font-family: inherit; cursor: pointer; }
.form-cancel { border: 1px solid var(--line); color: var(--muted); background: transparent; }
.form-submit { display: inline-flex; justify-content: space-between; gap: 20px; border: 1px solid var(--brown); color: #fff; background: var(--brown); }
.form-status { margin: 18px 0 0; padding: 12px 14px; color: #fff; background: var(--wood); font-size: 12px; }
.consult-panel { width: min(790px, 100%); }
.consult-options { display: grid; grid-template-columns: 1.15fr .85fr; border: 1px solid var(--line); }
.consult-options > * { padding: 26px; }
.consult-form { border-right: 1px solid var(--line); }
.consult-option-head { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.consult-option-head > span { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid var(--line); color: var(--wood); font-family: Arial, sans-serif; font-size: 10px; }
.consult-option-head small { color: var(--wood); font-size: 8px; letter-spacing: .18em; }
.consult-option-head h3 { margin: 2px 0 0; font-family: "Songti SC", serif; font-size: 20px; font-weight: 500; }
.consult-submit { width: 100%; margin-top: 24px; padding: 13px 16px; cursor: pointer; }
.consult-wechat { display: flex; flex-direction: column; align-items: center; background: rgba(139,106,77,.06); text-align: center; }
.consult-wechat .consult-option-head { align-self: stretch; text-align: left; }
.consult-qr { width: 178px; padding: 0; background: transparent; }
.consult-qr img { display: block; width: 100%; height: auto; }
.consult-wechat > p { margin: 18px 0 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
@keyframes modal-in { from { opacity: 0; transform: translateY(18px) scale(.985); } to { opacity: 1; transform: translateY(0) scale(1); } }

@media (max-width: 960px) {
  .site-header { grid-template-columns: 1fr auto; }
  .desktop-nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 9vh 8vw 7vh; }
  .hero-visual { min-height: 500px; }
  .hero-index { display: none; }
  .trust-strip { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .trust-strip div:nth-child(3) { border-left: none; }
  .intro-main, .section-head, .integration, .about, .contact { grid-template-columns: 1fr; }
  .pain-grid, .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .materials-top { grid-template-columns: 1fr; gap: 42px; }
  .materials-visual img { height: 420px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .integration-art { order: 2; }
  .about-data { margin-top: 20px; }
}

@media (max-width: 640px) {
  .site-header { height: 68px; padding: 0 5vw; }
  .site-logo { width: 96px; }
  .header-brand { gap: 9px; }
  .brand-cn { padding-left: 9px; font-size: 13px; letter-spacing: .08em; }
  .brand-mark { font-size: 18px; }
  .nav-cta { font-size: 11px; }
  .header-phone-link { font-size: 14px; }
  .header-actions { gap: 10px; }
  .header-phone { padding: 9px 11px; font-size: 12px; }
  .phone-label { display: none; }
  .header-actions .nav-cta { display: none; }
  .hero { min-height: auto; }
  .hero-copy { padding: 68px 7vw 56px; }
  .hero h1 { font-size: 34px; line-height: 1.3; margin: 24px 0 20px; }
  .hero-text { font-size: 14px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 12px; margin-top: 29px; }
  .hero-visual { min-height: 380px; }
  .hero-image { object-position: 49% center; }
  .hero-controls { right: 7%; bottom: 7%; gap: 8px; }
  .hero-arrow { width: 30px; height: 30px; }
  .hero-dots { gap: 5px; }
  .trust-strip { padding: 22px 5vw; }
  .trust-strip div { padding-left: 14px; }
  .section-pad { padding: 72px 7vw; }
  .qr-code-card { grid-template-columns: 92px 1fr; gap: 14px; padding: 10px 0 0; }
  .qr-code-card img { width: 92px; height: 92px; }
  .qr-code-card strong { font-size: 15px; }
  .intro-main { gap: 28px; margin: 38px 0 46px; }
  .big-question { font-size: 29px; line-height: 1.45; }
  .pain-grid { grid-template-columns: 1fr 1fr; }
  .pain-card { padding: 18px 12px; min-height: 165px; }
  .pain-card:nth-child(2) { border-right: 0; }
  .pain-card h3 { margin-top: 28px; font-size: 19px; }
  .space-row { grid-template-columns: 35px 1fr 20px; padding: 18px 0; gap: 12px; }
  .space-products, .space-value { grid-column: 2 / 4; }
  .integration-art { height: 360px; }
  .materials-visual img { height: 260px; }
  .process-grid, .materials-grid { grid-template-columns: 1fr 1fr; }
  .process-grid article, .materials-grid article { min-height: 190px; padding: 17px; }
  .process-grid h3, .materials-grid h3 { margin-top: 28px; font-size: 18px; }
  .case-grid { grid-template-columns: 1fr; grid-template-rows: 390px 250px 250px; }
  .case-1 { grid-row: auto; }
  .guide-list-item { grid-template-columns: 36px 1fr 15px; gap: 12px; }
  .guide-list h3 { font-size: 17px; line-height: 1.5; }
  .guide-page-header { flex-direction: column; align-items: flex-start; }
  .guide-page-body { padding-top: 40px; }
  footer { grid-template-columns: 1fr; align-items: start; }
  footer > div { justify-self: start; flex-wrap: wrap; justify-content: flex-start; white-space: normal; }
}

/* Refined grid surfaces and pointer-only hover interactions */
a:focus-visible { outline: 2px solid var(--wood); outline-offset: 4px; }
.intro-section { background: radial-gradient(circle at 92% 18%, rgba(139,106,77,.09), transparent 29%), var(--paper); }

.trust-strip div {
  padding: 10px 14px 10px 24px;
  transition: background .35s ease, transform .35s cubic-bezier(.2,.8,.2,1);
}
.trust-strip div:nth-child(even) { background: rgba(139,106,77,.045); }

.pain-card {
  position: relative;
  overflow: hidden;
  transition: transform .4s cubic-bezier(.2,.8,.2,1), box-shadow .4s ease, background .4s ease;
}
.pain-card:nth-child(1) { background: #f8f5ef; }
.pain-card:nth-child(2) { background: #ece6dc; }
.pain-card:nth-child(3) { background: #f4eee5; }
.pain-card:nth-child(4) { background: #e7ded2; }
.pain-card::after {
  content: "";
  position: absolute;
  right: -35px;
  bottom: -35px;
  width: 92px;
  height: 92px;
  border: 1px solid rgba(139,106,77,.18);
  border-radius: 50%;
  transition: transform .45s ease, background .45s ease;
}

.space-row { position: relative; transition: background .35s ease, padding .35s cubic-bezier(.2,.8,.2,1); }
.space-row:nth-child(even) { background: rgba(255,255,255,.018); }
.space-row > span:last-child { transition: transform .3s ease, color .3s ease; }
.integration-image { transition: transform .9s cubic-bezier(.2,.8,.2,1), filter .6s ease; }

.process-grid article {
  position: relative;
  overflow: hidden;
  transition: background .4s ease, transform .4s cubic-bezier(.2,.8,.2,1);
}
.process-grid article:nth-child(4n+2),
.process-grid article:nth-child(4n+3) { background: rgba(255,255,255,.028); }
.process-grid span {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: rgba(255,255,255,.46);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50%;
  font-size: 9px;
  transition: color .3s ease, border-color .3s ease, background .3s ease;
}

.case-placeholder > div { transition: transform .45s cubic-bezier(.2,.8,.2,1); }
.materials-grid article {
  position: relative;
  overflow: hidden;
  transition: background .4s ease, transform .4s cubic-bezier(.2,.8,.2,1);
}
.materials-grid article:nth-child(odd) { background: rgba(42,31,24,.08); }
.materials-grid article::after {
  content: "";
  position: absolute;
  inset: auto -20% -62% 30%;
  height: 135px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.12), transparent 68%);
  opacity: 0;
  transition: opacity .45s ease, transform .45s ease;
}

.guide-list article {
  padding-right: 14px;
  transition: padding .4s cubic-bezier(.2,.8,.2,1), background .4s ease;
}
.guide-list article:nth-child(even) { background: rgba(139,106,77,.04); }
.guide-list article > span:last-child { transition: transform .3s ease, color .3s ease; }
.contact-card {
  background: rgba(249,246,239,.94);
  box-shadow: 0 24px 70px rgba(54,39,27,.14);
  transition: transform .45s cubic-bezier(.2,.8,.2,1), box-shadow .45s ease;
}

.process-grid article {
  display: grid;
  grid-template-columns: 42px 1fr;
  grid-template-areas:
    "number number"
    "icon title"
    "description description";
  column-gap: 14px;
  align-content: start;
}
.process-grid article > span { grid-area: number; justify-self: start; }
.process-grid .process-icon { grid-area: icon; align-self: center; margin-top: 24px; }
.process-grid h3 { grid-area: title; align-self: center; margin: 24px 0 0; text-align: right; white-space: nowrap; }
.process-grid p { grid-area: description; margin: 20px 0 0; }

@media (hover: hover) and (pointer: fine) {
  .trust-strip div:hover { background: rgba(139,106,77,.1); transform: translateY(-3px); }
  .pain-card:hover { z-index: 2; transform: translateY(-7px); background: #fbf8f2; box-shadow: 0 24px 48px rgba(62,45,32,.13); }
  .pain-card:hover::after { transform: scale(1.35); background: rgba(139,106,77,.06); }
  .space-row:hover { padding: 0 18px; background: rgba(255,255,255,.075); }
  .space-row:hover > span:last-child { color: #fff; transform: translate(4px,-4px); }
  .integration-art:hover .integration-image { transform: scale(1.035); filter: contrast(1.03) saturate(1.02); }
  .process-grid article:hover { z-index: 2; background: rgba(139,106,77,.22); transform: translateY(-5px); }
  .process-grid article:hover span { color: #fff; border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.08); }
  .process-grid article:hover .process-icon { color: #fff; border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.07); transform: translateY(-3px); }
  .case-placeholder:hover .case-image { transform: scale(1.045); }
  .case-placeholder:hover > div { transform: translateY(-6px); }
  .materials-grid article:hover { z-index: 2; background: rgba(42,31,24,.18); transform: translateY(-6px); }
  .materials-grid article:hover::after { opacity: 1; transform: translateY(-10px); }
  .guide-list article:hover { padding-left: 18px; background: rgba(139,106,77,.09); }
  .guide-list article:hover > span:last-child { color: var(--wood); transform: translate(4px,-4px); }
  .contact-card:hover { transform: translateY(-6px); box-shadow: 0 34px 90px rgba(54,39,27,.22); }
}

@media (max-width: 640px) {
  .trust-strip div { padding: 9px 10px 9px 14px; }
  .process-grid article { min-height: 225px; }
  .process-icon { width: 38px; height: 38px; margin-top: 18px; }
  .process-grid h3 { margin-top: 18px; font-size: 17px; }
  .process-grid p { margin-top: 16px; }
  .join-modal { padding: 12px; }
  .join-panel { max-height: calc(100vh - 24px); padding: 24px 20px; }
  .join-panel h2 { font-size: 31px; }
  .form-grid { grid-template-columns: 1fr; gap: 15px; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions button { width: 100%; }
  .consult-options { grid-template-columns: 1fr; }
  .consult-options > * { padding: 22px 18px; }
  .consult-form { border-right: 0; border-bottom: 1px solid var(--line); }
  .case-block-carousel { margin-top: 38px; }
  .case-block-controls { grid-template-columns: 1fr auto; }
  .case-block-dots { display: none; }
  .case-card-hint { top: 12px; right: 12px; opacity: 1; transform: none; }
  .case-lightbox-meta { gap: 12px; }
  .case-lightbox { padding: 16px; }
  .case-lightbox-panel { grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 6px; }
  .case-lightbox-arrow { width: 34px; height: 42px; }
  .case-lightbox figcaption { flex-direction: column; gap: 3px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}