/* COREGY · 全站定稿 v1（2026-10-08）：由首页 v3 扩展至六页
   白底清爽：白底 header + 衬线大标题 + 白绿间隔分段 + 大留白（旧暗绿渐变编辑风废弃） */

:root {
  --ink: #1d231e;
  --text: #576056;
  --muted: #8a9186;
  --line: #e3e6df;
  --accent: #2f6d4f;
  --green: #e9eddf;
  --card-bg: #d8e2cd;
  --sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --serif: "Playfair Display", "Noto Serif SC", "Songti SC", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); color: var(--ink); background: #fff; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }

html[lang="zh-CN"] .i18n-en { display: none !important; }
html[lang="en"] .i18n-zh { display: none !important; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 40px; }

/* ---------- header（白底常驻） ---------- */
.site-header {
  position: relative; z-index: 50; padding: 24px 0;
  background: #fff; transition: box-shadow .3s ease;
}
.site-header .wrap { display: flex; align-items: center; gap: 36px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-logo { display: block; height: 34px; width: auto; }
.brand-logo-light { display: none; }
.brand-en { font-size: 14.5px; font-weight: 600; letter-spacing: .1em; color: var(--ink); }
.brand-zh { font-size: 12.5px; color: var(--text); }
.main-nav { margin-left: auto; display: flex; gap: 30px; }
.main-nav a { font-size: 13px; color: var(--text); text-decoration: none; letter-spacing: .03em; }
.main-nav a:hover, .main-nav a.current { color: var(--ink); }
.lang-toggle {
  background: transparent; border: 1px solid #ccd0c8; color: var(--text);
  font-family: var(--sans); font-size: 12px; padding: 8px 16px; border-radius: 999px; cursor: pointer;
}
.site-header.scrolled { box-shadow: 0 1px 0 var(--line), 0 8px 30px rgba(20,30,25,.06); }

/* ---------- hero（仅首页） ---------- */
.hero {
  position: relative; display: flex; align-items: center;
  min-height: calc(100vh - 83px); padding: 120px 0 140px;
  background: #e9eddf url("img/ph-hero-v2.jpg") center / cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(233,237,223,.93) 0%, rgba(226,232,215,.86) 48%, rgba(211,223,202,.74) 100%);
}
.hero .wrap { position: relative; }
.hero h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.7rem, 5.6vw, 4.5rem); line-height: 1.24; letter-spacing: -.005em;
  color: var(--ink); max-width: 780px; margin-bottom: 40px;
}
.hero h1 i { font-style: normal; font-weight: 500; }
html[lang="en"] .hero h1 i { font-style: normal; font-weight: 500; }
.hero .sub { max-width: 460px; font-size: 14.5px; line-height: 2.1; color: var(--text); margin-bottom: 52px; }

/* ---------- 首页 services 三卡（仅首页） ---------- */
.services { padding: 150px 0 170px; background: #fff; }
.services .head { max-width: 620px; margin-bottom: 90px; }
.services .sec-title { margin-bottom: 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }

/* ---------- 按钮与链接 ---------- */
.btn-pill {
  display: inline-block; padding: 16px 36px; font-size: 13.5px; letter-spacing: .04em; text-decoration: none;
  color: #23301f; background: #b3c8ae; border-radius: 999px;
  transition: background .2s ease;
}
.btn-pill:hover { background: #a0ba9b; }
.btn-pill.solid { margin-top: 44px; }
.btn-pill.ghost { background: transparent; border: 1px solid #9fae97; color: #23301f; }
.btn-pill.ghost:hover { background: rgba(179,200,174,.45); }
.arrow-link { font-size: 13.5px; letter-spacing: .03em; color: var(--ink); text-decoration: none; border-bottom: 1px solid rgba(40, 60, 44, .35); padding-bottom: 4px; }
.arrow-link:hover { border-color: var(--ink); }
a.accent, span.accent { color: var(--accent); font-weight: 500; }

/* ---------- 分段 ---------- */
.sec { padding: 160px 0; }
.sec-t1 { background: var(--green); }
.sec-t2 { background: #fff; }
.sec-t3 { background: var(--green); }
.kicker { font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: var(--muted); margin-bottom: 28px; }
.sec-title { font-family: var(--serif); font-weight: 400; font-size: clamp(1.9rem, 3.6vw, 2.8rem); line-height: 1.32; letter-spacing: -.005em; color: var(--ink); }
.sec-title i { font-style: normal; font-weight: 500; }
html[lang="en"] .sec-title i { font-style: normal; font-weight: 500; }
.duo { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(60px, 12vw, 150px); align-items: start; }
.prose p { max-width: 520px; font-size: 14px; line-height: 2.15; color: var(--text); margin-bottom: 28px; }
.prose p:last-child { margin-bottom: 0; }
.tagline { font-size: 13px; line-height: 2; letter-spacing: .05em; color: var(--accent); }
.lede { max-width: 620px; font-size: 14.5px; line-height: 2.1; color: var(--text); margin-top: 24px; }

/* ---------- 子页 banner（真图 + 鼠尾草绿蒙版，同 hero 手法） ---------- */
.page-banner {
  position: relative; background: var(--green); padding: 112px 0 96px;
  background-size: cover; background-position: center;
  display: flex; align-items: center; min-height: 680px;
}
.page-banner .wrap { width: 100%; }
.page-banner::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(180deg, rgba(233,237,223,.94) 0%, rgba(231,235,220,.90) 55%, rgba(226,232,215,.84) 100%);
}
.page-banner .wrap { position: relative; z-index: 1; }
.pb-global   { background-image: url("img/banner-global.jpg"); }
.pb-business { background-image: url("img/banner-business.jpg"); }
.pb-enersay  { background-image: url("img/banner-enersay.jpg"); }
.pb-cases    { background-image: url("img/banner-cases.jpg"); }
.pb-contact  { background-image: url("img/banner-contact.jpg"); }
.page-banner .kicker { margin-bottom: 24px; }
.page-banner h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.3; letter-spacing: -.005em;
  color: var(--ink); max-width: 860px; margin-bottom: 28px;
}
.page-banner h1 i { font-style: normal; font-weight: 500; }
html[lang="en"] .page-banner h1 i { font-style: normal; font-weight: 500; }
.page-banner .sub { max-width: 600px; font-size: 14.5px; line-height: 2.1; color: var(--text); }
.cta-row { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-top: 48px; }

/* ---------- 子页 section 头 ---------- */
.sec-head { max-width: 720px; margin-bottom: 80px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 34px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--card-bg); border-radius: 18px;
  padding: 56px 42px 50px; display: flex; flex-direction: column;
}
.card .num { font-family: var(--serif); font-size: 46px; font-weight: 400; color: #5a6b50; opacity: .75; margin-bottom: 36px; }
.card h3 { font-family: var(--serif); font-weight: 500; font-size: 23px; line-height: 1.4; margin-bottom: 24px; color: var(--ink); }
.card p { font-size: 13.5px; line-height: 2.05; color: #414c3d; margin-bottom: 28px; }
.card p:last-child { margin-bottom: 0; }
.card .arrow-link { margin-top: auto; align-self: flex-start; }
.card .btn-pill { margin-top: auto; align-self: flex-start; padding: 13px 28px; }
.card-links { margin-top: auto; display: flex; flex-direction: column; gap: 20px; align-items: flex-start; }
.g4 .card { padding: 44px 34px 40px; }
.g4 .card h3 { font-size: 20px; margin-bottom: 18px; }
.card .cap-list { list-style: none; margin-bottom: 30px; }
.card .cap-list li { padding: 12px 0; border-top: 1px solid #c2cfb3; font-size: 13.5px; line-height: 1.8; color: #414c3d; }
.card .cap-list li:first-child { border-top: none; padding-top: 0; }
.card .quote { margin-top: auto; padding-top: 24px; border-top: 1px solid #c2cfb3; font-size: 13px; line-height: 1.9; color: var(--accent); margin-bottom: 0; }

/* ---------- 状态徽标（能言能力清单） ---------- */
.status { display: inline-block; font-size: 11px; letter-spacing: .18em; padding: 6px 14px; border-radius: 999px; margin-bottom: 22px; }
.status-live { color: #2f6d4f; background: #c9ddbd; }
.status-soon { color: #75806f; background: #e4e9da; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.step { border-top: 1.5px solid var(--ink); padding-top: 28px; }
.step .no { font-family: var(--serif); font-size: 30px; font-weight: 400; color: #5a6b50; opacity: .8; margin-bottom: 16px; }
.step h4 { font-size: 16px; font-weight: 600; margin-bottom: 12px; color: var(--ink); }
.step p { font-size: 13.5px; line-height: 2; color: var(--text); }

/* ---------- 流程表 ---------- */
.table-scroll { overflow-x: auto; }
table.svc { width: 100%; border-collapse: collapse; min-width: 640px; }
table.svc th {
  text-align: left; font-size: 11px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase;
  color: var(--muted); padding: 0 20px 16px 0; border-bottom: 1.5px solid var(--ink);
}
table.svc td { padding: 24px 20px 24px 0; border-bottom: 1px solid var(--line); font-size: 13.5px; line-height: 1.9; color: var(--text); vertical-align: top; }
table.svc td:first-child { color: var(--ink); font-weight: 500; width: 22%; }

/* ---------- 六理由（细线分组） ---------- */
.reasons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 34px; }
.reason { border-top: 1.5px solid rgba(29, 35, 30, .45); padding-top: 24px; }
.reason h4 { font-family: var(--serif); font-weight: 500; font-size: 18px; margin-bottom: 10px; color: var(--ink); }
.reason p { font-size: 13.5px; line-height: 2; color: var(--text); }

/* ---------- 能言对话示意块（全站唯一深色元素，模拟产品界面） ---------- */
.term-block {
  background: #16382b; color: #d7e2ca; border-radius: 18px;
  padding: 48px 52px; margin-top: 24px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px; line-height: 2;
}
.term-block > div + div { margin-top: 14px; }
.t-prompt { color: #8fd0a8; margin-right: 10px; }
.t-note { color: #7d9384; font-size: 11.5px; }

/* ---------- 案例 ---------- */
.cases-stack { display: grid; gap: 40px; }
.case-tag {
  display: inline-block; font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent); border: 1px solid #b9c9ac; border-radius: 999px;
  padding: 7px 16px; margin-bottom: 28px; align-self: flex-start;
}
.card dl dt { font-size: 11px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: #6b7666; margin: 28px 0 8px; }
.card dl dd { font-size: 13.5px; line-height: 2; color: #414c3d; }
.card dl dt:first-of-type { margin-top: 0; }
.fineprint { margin-top: 48px; font-size: 12.5px; line-height: 2; color: var(--muted); max-width: 820px; }

/* ---------- CTA 收尾段 ---------- */
.cta-band { text-align: center; }
.cta-band .sec-title { margin: 0 auto; }
.cta-band .lede { margin: 24px auto 44px; }

/* ---------- 双轮（首页+出海） ---------- */
.drives { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(60px, 10vw, 120px); margin-top: 100px; }
.sec-head + .drives { margin-top: 0; }
.drive-box h3 { font-family: var(--serif); font-weight: 500; font-size: 20px; margin-bottom: 16px; }
.drive-box li {
  list-style: none; padding: 19px 0; border-top: 1px solid #d2d7c8;
  font-size: 14px; line-height: 1.8; color: var(--text);
}
.sec-t1 .drive-box li { border-top-color: #ccd4c0; }
.drive-box li:first-child { border-top: 1.5px solid var(--ink); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 90px 0 48px; background: #fff; }
.site-footer .cols { display: grid; grid-template-columns: 2.2fr 1fr 1fr; gap: 80px; margin-bottom: 80px; }
.brand-line { font-size: 14.5px; font-weight: 600; letter-spacing: .09em; margin-bottom: 20px; }
.site-footer p { font-size: 13px; line-height: 2.1; color: var(--text); }
.site-footer .mail { display: inline-block; margin-top: 18px; font-size: 13.5px; font-weight: 500; color: var(--ink); text-decoration: none; border-bottom: 1px solid #b9bdb7; }
.site-footer h5 { font-size: 11px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); margin-bottom: 26px; }
.site-footer .cols a:not(.mail) { display: block; text-decoration: none; font-size: 13.5px; color: var(--text); margin-bottom: 16px; }
.site-footer .cols a:not(.mail):hover { color: var(--ink); }
.copy { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 32px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .site-header { padding: 14px 0; }
  .site-header .wrap { flex-wrap: wrap; gap: 14px; }
  .main-nav { order: 3; width: 100%; margin-left: 0; gap: 18px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; padding-bottom: 4px; }
  .main-nav::-webkit-scrollbar { display: none; }
  .lang-toggle { margin-left: auto; }
  .hero { min-height: 88vh; padding: 100px 0 110px; }
  .page-banner { padding: 72px 0 64px; min-height: 440px; }
  .duo, .drives, .cards, .site-footer .cols,
  .grid.g2, .grid.g3, .grid.g4, .steps, .reasons, .cases-stack { grid-template-columns: 1fr; }
  .cards { gap: 24px; }
  .card { padding: 44px 36px; }
  .g4 .card { padding: 44px 36px; }
  .services { padding: 100px 0 110px; }
  .services .head { margin-bottom: 56px; }
  .sec { padding: 100px 0; }
  .cta-band { padding: 100px 0; }
  .sec-head { margin-bottom: 56px; }
  .steps { gap: 32px; }
  .term-block { padding: 36px 28px; }
}