:root {
  --ink: #1d1d1f;
  --muted: #626267;
  --soft: #f5f5f7;
  --wash: #eef7f3;
  --line: #d7d7dc;
  --green: #087f5b;
  --green-dark: #075f47;
  --black: #080908;
  --max: 1160px;
  --measure: 720px;
  --gutter: clamp(20px, 5vw, 68px);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
::selection { color: #fff; background: var(--green); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
:focus-visible { outline: 3px solid rgba(8,127,91,.42); outline-offset: 4px; border-radius: 4px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 11px 16px; color: #fff; background: var(--green); border-radius: 10px; transition: top .2s; }
.skip-link:focus { top: 12px; }

.global-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 58px;
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(180%) blur(20px);
  transition: background .25s, border-color .25s;
}
.global-nav.scrolled { background: rgba(255,255,255,.94); border-color: rgba(0,0,0,.09); }
.nav-inner { width: min(calc(100% - 2 * var(--gutter)), var(--max)); height: 100%; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 9px; white-space: nowrap; font-size: 14px; }
.brand img { width: 29px; height: 29px; border-radius: 8px; }
.brand strong { font-weight: 680; }
.global-nav nav { display: flex; align-items: center; gap: clamp(22px,3vw,44px); margin-left: auto; font-size: 13px; }
.global-nav nav a { color: #444448; transition: color .2s; }
.global-nav nav a:hover, .global-nav nav a[aria-current="page"] { color: var(--green); }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 34px; padding: 0 16px; border-radius: 999px; color: #fff; background: var(--green); font-size: 13px; white-space: nowrap; }
.nav-cta:hover { background: var(--green-dark); }
.menu-button { display: none; width: 38px; height: 38px; border: 0; padding: 9px; background: transparent; }
.menu-button span, .menu-button::before, .menu-button::after { content: ""; display: block; height: 1px; margin: 5px 0; background: var(--ink); transition: transform .2s, opacity .2s; }

main { overflow: clip; }
.eyebrow { margin: 0 0 16px; color: var(--green); font-size: 14px; font-weight: 680; letter-spacing: .02em; }
.kicker { margin: 0 0 10px; color: var(--green); font-size: 13px; font-weight: 680; }
.lede { max-width: 680px; color: var(--muted); font-size: clamp(18px,2vw,22px); line-height: 1.55; letter-spacing: -.015em; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid transparent; border-radius: 999px; font-size: 15px; font-weight: 600; transition: transform .2s, background .2s, box-shadow .2s; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: #fff; background: var(--green); box-shadow: 0 10px 28px rgba(8,127,91,.18); }
.button.primary:hover { background: var(--green-dark); box-shadow: 0 14px 34px rgba(8,127,91,.23); }
.button.secondary { border-color: #b9b9be; background: rgba(255,255,255,.72); }
.button.secondary:hover { border-color: var(--ink); }
.text-link { color: var(--green); font-weight: 600; }
.text-link::after { content: "›"; display: inline-block; margin-left: 6px; font-size: 20px; line-height: 0; transition: transform .2s; }
.text-link:hover::after { transform: translateX(4px); }

.hero {
  position: relative;
  min-height: max(760px, 100svh);
  padding: clamp(120px,15vh,160px) var(--gutter) 0;
  background: linear-gradient(180deg,#fff 0%,#fff 46%,#f3f7f5 100%);
}
.hero-copy { position: relative; z-index: 3; width: min(100%, 980px); margin: auto; text-align: center; }
.hero h1 { max-width: 940px; margin: 0 auto; font-size: clamp(48px,6vw,78px); line-height: 1.02; letter-spacing: -.058em; }
.hero h1 span { color: #7d7d82; }
.hero .lede { margin: 23px auto 0; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 27px; }
.hero-visual { position: relative; z-index: 1; width: min(1360px, 104vw); height: clamp(350px,42vw,570px); margin: 24px auto 0; }
.visual-frame { --lift: 0px; --scale: 1; height: 100%; transform: translateY(var(--lift)) scale(var(--scale)); transform-origin: center top; animation: frameIn 1.15s .15s cubic-bezier(.22,1,.36,1) both; }
.visual-frame img { width: 100%; height: 100%; object-fit: cover; object-position: center 48%; mix-blend-mode: multiply; }
.visual-caption { position: absolute; right: 7%; bottom: 8%; z-index: 2; margin: 0; padding: 7px 11px; border: 1px solid rgba(0,0,0,.08); border-radius: 999px; color: #77777c; background: rgba(255,255,255,.84); backdrop-filter: blur(8px); font-size: 11px; }

.answer-strip { background: var(--black); color: #f5f5f7; }
.answer-inner { width: min(calc(100% - 2 * var(--gutter)),var(--max)); margin: auto; padding: 42px 0; display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; }
.answer-inner h2 { margin: 0; font-size: clamp(24px,3vw,38px); letter-spacing: -.035em; }
.answer-inner p { margin: 0; color: #a1a1a6; font-size: 15px; line-height: 1.7; }

.section { padding: clamp(90px,11vw,150px) var(--gutter); }
.section.soft { background: var(--soft); }
.section.dark { color: #f5f5f7; background: var(--black); }
.section-inner { width: min(100%,var(--max)); margin: auto; }
.section-head { display: grid; grid-template-columns: 1fr minmax(320px,.72fr); gap: 60px; align-items: end; margin-bottom: clamp(48px,7vw,84px); }
.section-head h2 { max-width: 720px; margin: 0; font-size: clamp(40px,5vw,68px); line-height: 1.04; letter-spacing: -.05em; }
.section-head p:last-child { margin: 0; color: var(--muted); line-height: 1.7; }
.dark .section-head p:last-child { color: #a1a1a6; }

.service-list { border-top: 1px solid var(--line); }
.service-row { display: grid; grid-template-columns: 90px 1fr .85fr 30px; gap: 28px; align-items: start; padding: 34px 0; border-bottom: 1px solid var(--line); transition: padding .2s, background .2s; }
.service-row:hover { padding-left: 18px; padding-right: 18px; background: #fafafa; }
.service-row > span { color: var(--green); font-size: 13px; font-weight: 680; }
.service-row h3 { margin: 0 0 10px; font-size: clamp(23px,2.6vw,34px); letter-spacing: -.035em; }
.service-row p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.service-row b { align-self: center; color: var(--green); font-size: 24px; font-weight: 400; }

.scenario-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--line); }
.scenario-grid article { min-height: 250px; padding: 30px; background: #fff; }
.soft .scenario-grid article { background: var(--soft); }
.scenario-grid span { color: var(--green); font-size: 13px; font-weight: 680; }
.scenario-grid h3 { margin: 36px 0 12px; font-size: 23px; letter-spacing: -.03em; }
.scenario-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.method-head { max-width: 840px; }
.method-head h2 { margin: 0; font-size: clamp(52px,7vw,92px); line-height: .98; letter-spacing: -.06em; }
.method-head h2 span { color: #747479; }
.method-flow { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 84px; border-top: 1px solid #353535; }
.method-flow article { padding: 28px 24px 4px 0; border-right: 1px solid #353535; }
.method-flow article + article { padding-left: 24px; }
.method-flow article:last-child { border-right: 0; }
.method-flow b { color: #8de3c7; font-size: 12px; }
.method-flow h3 { margin: 42px 0 13px; font-size: 23px; }
.method-flow p { margin: 0; color: #9a9a9f; font-size: 14px; line-height: 1.7; }

.case-list { border-top: 1px solid var(--line); }
.case-row { display: grid; grid-template-columns: 118px 1.25fr 1fr; gap: 40px; padding: 42px 0; border-bottom: 1px solid var(--line); }
.case-row > span { color: var(--green); font-size: 13px; font-weight: 680; }
.case-row h3 { margin: 0 0 10px; font-size: clamp(22px,2.5vw,32px); letter-spacing: -.035em; }
.case-row p, .case-row ul { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.case-row ul { padding-left: 18px; }
.evidence-note { margin: 30px 0 0; padding: 18px 22px; border-left: 3px solid var(--green); color: var(--muted); background: var(--wash); font-size: 14px; line-height: 1.65; }
.content-meta { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 28px; color: var(--muted); font-size: 12px; }
.content-meta span + span { position: relative; }
.content-meta span + span::before { content: ""; position: absolute; left: -13px; top: 50%; width: 3px; height: 3px; border-radius: 50%; background: #a7a7ac; }

.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { display: flex; justify-content: space-between; gap: 24px; padding: 25px 0; cursor: pointer; list-style: none; font-size: clamp(18px,2vw,23px); font-weight: 650; letter-spacing: -.02em; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--green); font-size: 24px; font-weight: 400; }
.faq-item[open] summary::after { content: "−"; }
.faq-item .answer { max-width: 800px; padding: 0 0 28px; color: var(--muted); line-height: 1.75; }
.faq-item .answer p { margin: 0; }

.cta { padding: clamp(100px,13vw,170px) var(--gutter); text-align: center; background: var(--soft); }
.cta-inner { width: min(100%,930px); margin: auto; }
.cta h2 { margin: 0; font-size: clamp(46px,7vw,88px); line-height: 1; letter-spacing: -.06em; }
.cta p { max-width: 650px; margin: 25px auto 0; color: var(--muted); font-size: 18px; line-height: 1.65; }
.cta .hero-actions { margin-top: 28px; }
.response-note { margin-top: 20px !important; font-size: 13px !important; }

.page-hero { padding: clamp(108px,12vw,150px) var(--gutter) clamp(64px,8vw,98px); background: linear-gradient(180deg,#fff,#f6f8f7); }
.page-hero-inner { width: min(100%,var(--max)); margin: auto; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 26px; color: var(--muted); font-size: 12px; }
.breadcrumbs a:hover { color: var(--green); }
.breadcrumbs span:not(:last-child)::after, .breadcrumbs a::after { content: "/"; margin-left: 8px; color: #aaa; }
.page-hero h1 { max-width: 960px; margin: 0; font-size: clamp(48px,6.4vw,82px); line-height: 1; letter-spacing: -.058em; }
.page-hero .lede { margin: 20px 0 0; }
.page-hero-actions { display: flex; gap: 14px; margin-top: 28px; }

.article-layout { display: grid; grid-template-columns: 250px minmax(0,760px); gap: clamp(50px,8vw,110px); justify-content: center; }
.toc { position: sticky; top: 100px; align-self: start; }
.toc strong { display: block; margin-bottom: 15px; font-size: 13px; }
.toc a { display: block; padding: 7px 0; color: var(--muted); font-size: 13px; }
.toc a:hover { color: var(--green); }
.prose section + section { margin-top: 70px; padding-top: 70px; border-top: 1px solid var(--line); }
.prose h2 { margin: 0 0 20px; font-size: clamp(32px,4vw,48px); line-height: 1.1; letter-spacing: -.045em; }
.prose h3 { margin: 34px 0 12px; font-size: 22px; letter-spacing: -.025em; }
.prose p, .prose li { color: var(--muted); line-height: 1.8; }
.prose ul, .prose ol { padding-left: 21px; }
.prose .direct-answer { padding: 24px 26px; border-radius: 16px; color: var(--ink); background: var(--wash); font-size: 17px; line-height: 1.7; }
.deliverables { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; margin-top: 30px; background: var(--line); border: 1px solid var(--line); }
.deliverables article { padding: 25px; background: #fff; }
.deliverables h3 { margin: 0 0 8px; font-size: 18px; }
.deliverables p { margin: 0; font-size: 14px; }
.comparison { width: 100%; border-collapse: collapse; margin-top: 28px; font-size: 14px; }
.comparison th, .comparison td { padding: 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.65; }
.comparison th { color: var(--ink); background: var(--soft); }
.comparison td { color: var(--muted); }

.price-factors { counter-reset: factor; border-top: 1px solid var(--line); }
.price-factors article { display: grid; grid-template-columns: 65px 1fr 1fr; gap: 30px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.price-factors article::before { counter-increment: factor; content: "0" counter(factor); color: var(--green); font-size: 12px; font-weight: 680; }
.price-factors h2 { margin: 0; font-size: 23px; }
.price-factors p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px,8vw,110px); }
.contact-list { margin: 0; }
.contact-list div { padding: 22px 0; border-bottom: 1px solid var(--line); }
.contact-list dt { margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.contact-list dd { margin: 0; font-size: 18px; line-height: 1.5; }
.contact-list a { color: var(--green); }
.brief-list { margin: 24px 0 0; padding: 0; list-style: none; counter-reset: brief; }
.brief-list li { counter-increment: brief; display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 12px 0; color: var(--muted); line-height: 1.65; }
.brief-list li::before { content: counter(brief); display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; color: #fff; background: var(--green); font-size: 12px; }

footer { padding: 48px var(--gutter) 34px; background: #fff; }
.footer-inner { width: min(100%,var(--max)); margin: auto; }
.footer-main { display: grid; grid-template-columns: 1.4fr repeat(3,1fr); gap: 50px; padding-bottom: 42px; }
.footer-brand strong { display: block; margin-bottom: 10px; font-size: 18px; }
.footer-brand p { max-width: 300px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.footer-col strong { display: block; margin-bottom: 13px; font-size: 12px; }
.footer-col a { display: block; padding: 5px 0; color: var(--muted); font-size: 13px; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }

.reveal { opacity: 1; transform: none; }
.motion-ready .reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1); }
.reveal.visible { opacity: 1; transform: none; }
@keyframes frameIn { from { opacity:0; transform:translateY(60px) scale(.95); } to { opacity:1; transform:translateY(var(--lift)) scale(var(--scale)); } }

@media (max-width: 900px) {
  .global-nav nav { position: fixed; inset: 58px 0 auto; display: none; padding: 14px var(--gutter) 22px; flex-direction: column; align-items: flex-start; gap: 0; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.98); }
  .global-nav nav.open { display: flex; }
  .global-nav nav a { width: 100%; padding: 13px 0; font-size: 15px; }
  .menu-button { display: block; margin-left: auto; }
  .nav-cta { display: none; }
  .answer-inner, .section-head { grid-template-columns: 1fr; gap: 24px; }
  .scenario-grid { grid-template-columns: 1fr 1fr; }
  .service-row { grid-template-columns: 70px 1fr 30px; }
  .service-row > p { grid-column: 2; }
  .service-row b { grid-column: 3; grid-row: 1/3; }
  .method-flow { grid-template-columns: 1fr 1fr; }
  .method-flow article:nth-child(2) { border-right: 0; }
  .method-flow article:nth-child(n+3) { border-top: 1px solid #353535; }
  .case-row { grid-template-columns: 85px 1fr; }
  .case-row > ul, .case-row > p:last-child { grid-column: 2; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 2; }
}

@media (max-width: 600px) {
  .hero { min-height: 720px; padding-top: 112px; }
  .hero h1 { font-size: 36px; line-height: 1.06; }
  .hero .lede { font-size: 17px; }
  .hero-actions, .page-hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button, .page-hero-actions .button { width: 100%; }
  .hero-visual { width: 174vw; height: 330px; margin-left: -42vw; margin-top: 20px; }
  .visual-caption { right: 26%; bottom: 5%; }
  .answer-inner { padding: 34px 0; }
  .section { padding-left: 20px; padding-right: 20px; }
  .section-head h2 { font-size: 39px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-grid article { min-height: 210px; }
  .service-row { grid-template-columns: 1fr 24px; gap: 10px; padding: 26px 0; }
  .service-row > span, .service-row > p { grid-column: 1; }
  .service-row h3 { grid-column: 1; }
  .service-row b { grid-column: 2; grid-row: 1/4; }
  .method-flow { grid-template-columns: 1fr; margin-top: 60px; }
  .method-flow article, .method-flow article + article { padding: 24px 0; border-top: 1px solid #353535; border-right: 0; }
  .method-flow h3 { margin-top: 24px; }
  .case-row { grid-template-columns: 1fr; gap: 10px; }
  .case-row > ul, .case-row > p:last-child { grid-column: 1; }
  .page-hero { padding-left: 20px; padding-right: 20px; }
  .page-hero h1 { font-size: 45px; }
  .deliverables { grid-template-columns: 1fr; }
  .comparison { display: block; overflow-x: auto; }
  .price-factors article { grid-template-columns: 40px 1fr; gap: 12px; }
  .price-factors p { grid-column: 2; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1/-1; }
  .footer-col:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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

/* 联系页 / 报价页：去除富文本编辑器写入的内联样式，改为正式类 */
.contact-title { margin: 0 0 24px; font-size: clamp(30px,4vw,52px); line-height: 1.05; letter-spacing: -.045em; }
.contact-lead { color: var(--muted); line-height: 1.75; }
.contact-cta { margin-top: 28px; }
.method-flow--light { border-top-color: var(--line); margin-top: 0; }
.method-flow--light article { border-color: var(--line); }
.method-flow--light h3 { color: var(--ink); }
.method-flow--light p { color: var(--muted); }