/* ============================================================
   EQUATOR CREATIVE — 官网改版设计稿
   设计方向：DAVIS 式照片驱动编辑排版 × 赤道红 × 思源黑体 × 中英双语
   ============================================================ */

:root {
  --red: #C8102E;          /* 赤道红 */
  --red-dark: #9E0C24;
  --paper: #FAF7F1;        /* 暖白纸面 */
  --paper-2: #F3EEE5;      /* 暖灰分区 */
  --ink: #1A1815;          /* 软炭黑，不用纯黑 */
  --ink-60: rgba(26, 24, 21, .6);
  --ink-40: rgba(26, 24, 21, .4);
  --line: #E3DCD0;         /* 线性分隔 */
  --white: #FFFFFF;
  --font: "Noto Sans SC", "Source Han Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --nav-h: 76px;
  --gutter: clamp(20px, 5vw, 72px);
  --ease: cubic-bezier(.22, .61, .21, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
::selection { background: var(--red); color: #fff; }

/* ---------- 语言切换：默认中文，[data-en] 隐藏 ---------- */
[data-en] { display: none; }
html[lang="en"] [data-en] { display: inline; }
html[lang="en"] [data-zh] { display: none; }
/* 块级元素双语 */
div[data-en], p[data-en], h1[data-en], h2[data-en], h3[data-en], h4[data-en], section[data-en], span.block[data-en] { display: none; }
html[lang="en"] div[data-en], html[lang="en"] p[data-en], html[lang="en"] h1[data-en], html[lang="en"] h2[data-en],
html[lang="en"] h3[data-en], html[lang="en"] h4[data-en], html[lang="en"] section[data-en], html[lang="en"] span.block[data-en] { display: block; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--gutter);
  transition: background .45s var(--ease), box-shadow .45s var(--ease);
}
.nav.solid { background: rgba(250, 247, 241, .92); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
.nav.on-dark:not(.solid) { color: #fff; }
.nav.on-dark:not(.solid) .nav-links a { color: rgba(255,255,255,.85); }
.nav.on-dark:not(.solid) .lang-toggle { border-color: rgba(255,255,255,.4); color: #fff; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand .brand-mark { width: 56px; height: auto; flex: none; display: block; }
.brand-name { line-height: 1.25; }
.brand-name .zh { font-size: 15px; font-weight: 700; letter-spacing: .06em; display: block; }
.brand-name .en { font-size: 9px; letter-spacing: .22em; opacity: .55; display: block; text-transform: uppercase; }

.nav-links { display: flex; gap: clamp(16px, 2.4vw, 34px); align-items: center; }
.nav-links a {
  position: relative; display: flex; flex-direction: column; align-items: center;
  font-size: 13.5px; font-weight: 500; letter-spacing: .04em; color: var(--ink-60);
  padding: 4px 0; transition: color .3s;
}
.nav-links a .sub { font-size: 8.5px; letter-spacing: .24em; text-transform: uppercase; opacity: .55; font-weight: 400; margin-top: 1px; }
html[lang="en"] .nav-links a .sub { display: none; }
.nav-links a:hover, .nav-links a.active { color: var(--red); }
.nav-links a.active::after {
  content: ""; position: absolute; bottom: -4px; left: 0; right: 0; height: 2px; background: var(--red);
}

.nav-right { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  border: 1px solid var(--ink-40); border-radius: 999px;
  font-size: 11.5px; letter-spacing: .08em; padding: 5px 13px;
  white-space: nowrap; /* 「中 | EN」含空格，禁止竖向断行 */
  transition: all .3s;
}
.lang-toggle:hover { border-color: var(--red); color: var(--red); }

.menu-btn { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.menu-btn span { width: 22px; height: 1.5px; background: currentColor; transition: .3s; }

/* ---------- 共用版式元件 ---------- */
.wrap { padding-left: var(--gutter); padding-right: var(--gutter); max-width: 1560px; margin: 0 auto; }

.kicker {
  font-size: 11.5px; letter-spacing: .3em; text-transform: uppercase;
  color: var(--red); font-weight: 600; margin-bottom: 18px;
  display: flex; align-items: center; gap: 12px;
}
.kicker::before { content: ""; width: 34px; height: 1px; background: var(--red); }

.h-display {
  font-size: clamp(30px, 4.6vw, 62px);
  font-weight: 700; line-height: 1.22; letter-spacing: .01em;
}
.h-display .thin { font-weight: 300; }

.lead { font-size: clamp(15px, 1.35vw, 18px); color: var(--ink-60); max-width: 720px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 600; letter-spacing: .06em; color: var(--red);
  padding-bottom: 3px; border-bottom: 1px solid transparent; transition: gap .3s var(--ease), border-color .3s;
}
.link-arrow:hover { gap: 16px; border-color: var(--red); }
.link-arrow .arr { transition: transform .3s var(--ease); }

.rule { border: 0; border-top: 1px solid var(--line); }

section.block { padding: clamp(72px, 9vw, 140px) 0; }
.block-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: clamp(36px, 5vw, 64px); flex-wrap: wrap; }

/* ---------- 首页 HERO（DAVIS 式全幅照片） ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: flex-end;
  color: #fff; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); animation: heroDrift 14s var(--ease) forwards; }
@keyframes heroDrift { to { transform: scale(1); } }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(10,12,16,.52) 0%, rgba(10,12,16,0) 58%),
    linear-gradient(180deg, rgba(10,12,16,.40) 0%, rgba(10,12,16,.10) 40%, rgba(10,12,16,.76) 100%);
}
.hero-inner { position: relative; z-index: 2; padding: 0 var(--gutter) clamp(48px, 7vw, 96px); max-width: 1560px; margin: 0 auto; width: 100%; }
.hero-kicker { font-size: 12px; letter-spacing: .34em; text-transform: uppercase; opacity: .85; margin-bottom: 22px; display: flex; align-items: center; gap: 14px; }
.hero-kicker::before { content: ""; width: 40px; height: 1px; background: var(--red); }
.hero h1 {
  font-size: clamp(38px, 6.4vw, 92px); font-weight: 700; line-height: 1.16; letter-spacing: .01em;
  max-width: 14em;
}
.hero h1 .dot { color: var(--red); }
.hero-sub { margin-top: 22px; font-size: clamp(14px, 1.3vw, 17px); font-weight: 300; letter-spacing: .06em; opacity: .85; }
.hero-cta { margin-top: 40px; display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.btn-pill {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--red); color: #fff; font-size: 14px; font-weight: 600; letter-spacing: .08em;
  padding: 15px 30px; border-radius: 999px; transition: background .3s, transform .3s var(--ease);
}
.btn-pill:hover { background: var(--red-dark); transform: translateY(-2px); }
.btn-ghost { color: #fff; font-size: 14px; letter-spacing: .06em; border-bottom: 1px solid rgba(255,255,255,.5); padding-bottom: 4px; transition: border-color .3s; }
.btn-ghost:hover { border-color: #fff; }
.hero-meta {
  position: relative; z-index: 2; border-top: 1px solid rgba(255,255,255,.22);
  display: flex; justify-content: space-between; gap: 20px;
  padding: 18px var(--gutter); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; opacity: .75;
  max-width: 1560px; margin: 0 auto; width: 100%;
}

/* ---------- 照片卡片（DAVIS 博客卡式） ---------- */
.photo-grid { display: grid; gap: clamp(18px, 2.4vw, 30px); }
.photo-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.photo-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.photo-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.pcard { position: relative; overflow: hidden; border-radius: 4px; background: var(--ink); aspect-ratio: 4 / 5; display: block; }
.pcard.wide { aspect-ratio: 4 / 3; }
.pcard img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease), opacity .6s; }
.pcard:hover img { transform: scale(1.05); }
.pcard::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,12,16,.05) 40%, rgba(10,12,16,.72) 100%);
  transition: opacity .5s;
}
.pcard-top { position: absolute; top: 18px; left: 20px; right: 20px; z-index: 2; display: flex; justify-content: space-between; color: rgba(255,255,255,.85); font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; }
.pcard-body { position: absolute; left: 20px; right: 20px; bottom: 20px; z-index: 2; color: #fff; }
.pcard-body .tag { font-size: 10.5px; letter-spacing: .24em; text-transform: uppercase; color: rgba(255,255,255,.75); display: block; margin-bottom: 8px; }
.pcard-body h3 { font-size: clamp(18px, 1.7vw, 24px); font-weight: 700; line-height: 1.4; }
.pcard-body p { font-size: 13px; color: rgba(255,255,255,.75); margin-top: 8px; line-height: 1.7; }
.pcard .go {
  position: absolute; right: 18px; bottom: 18px; z-index: 3;
  width: 40px; height: 40px; border-radius: 50%; background: var(--red); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
  opacity: 0; transform: translateY(8px); transition: all .35s var(--ease);
}
.pcard:hover .go { opacity: 1; transform: translateY(0); }

/* ---------- 编号列表（方法/价值） ---------- */
.num-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(24px, 3vw, 44px); }
.num-list.cols-3 { grid-template-columns: repeat(3, 1fr); }
.num-item { border-top: 1px solid var(--ink); padding-top: 20px; }
.num-item .no { font-size: 12px; letter-spacing: .2em; color: var(--red); font-weight: 600; }
.num-item h4 { font-size: 19px; font-weight: 700; margin: 12px 0 10px; }
.num-item h4 .en { display: block; font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-40); font-weight: 400; margin-top: 4px; }
.num-item p { font-size: 13.5px; color: var(--ink-60); line-height: 1.8; }

/* ---------- 每日简报 ---------- */
.brief-feature { display: grid; grid-template-columns: 1.15fr .85fr; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #fff; }
.brief-feature .img { position: relative; min-height: 380px; }
.brief-feature .img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.brief-feature .img .stamp {
  position: absolute; top: 18px; left: 18px; z-index: 2;
  background: var(--red); color: #fff; font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase;
  padding: 7px 14px; border-radius: 999px; font-weight: 600;
}
.brief-feature .txt { padding: clamp(28px, 3.4vw, 52px); display: flex; flex-direction: column; justify-content: center; }
.brief-date { font-size: 11.5px; letter-spacing: .26em; text-transform: uppercase; color: var(--red); font-weight: 600; margin-bottom: 16px; }
.brief-feature h3 { font-size: clamp(20px, 2vw, 28px); font-weight: 700; line-height: 1.5; }
.brief-feature .sum { margin-top: 16px; font-size: 14px; color: var(--ink-60); }
.brief-tags { margin-top: 20px; display: flex; gap: 8px; flex-wrap: wrap; }
.brief-tags span { font-size: 11px; letter-spacing: .06em; color: var(--ink-60); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; }
.brief-feature .link-arrow { margin-top: 28px; align-self: flex-start; }

.archive-row {
  display: grid; grid-template-columns: 110px 1fr auto; gap: 24px; align-items: center;
  padding: 26px 0; border-top: 1px solid var(--line); transition: padding .3s var(--ease);
}
.archive-row:last-child { border-bottom: 1px solid var(--line); }
.archive-row:hover { padding-left: 12px; }
.archive-row .d { font-size: 22px; font-weight: 700; letter-spacing: .02em; }
.archive-row .d small { display: block; font-size: 10.5px; font-weight: 400; letter-spacing: .2em; color: var(--ink-40); text-transform: uppercase; margin-top: 3px; }
.archive-row h4 { font-size: 16.5px; font-weight: 600; line-height: 1.6; }
.archive-row .meta { font-size: 12px; color: var(--ink-40); margin-top: 6px; letter-spacing: .04em; }
.archive-row .arr { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--ink-60); transition: all .3s; flex: none; }
.archive-row:hover .arr { background: var(--red); border-color: var(--red); color: #fff; }

/* ---------- 内页页头 ---------- */
.page-hero { padding: calc(var(--nav-h) + clamp(56px, 8vw, 110px)) 0 clamp(44px, 6vw, 80px); }
.page-hero .h-display { max-width: 16em; }
.page-hero .lead { margin-top: 24px; }

.band-photo { position: relative; height: clamp(320px, 52vw, 560px); overflow: hidden; border-radius: 6px; }
.band-photo img { width: 100%; height: 100%; object-fit: cover; }
.band-photo .cap {
  position: absolute; left: 24px; bottom: 20px; color: #fff; z-index: 2;
  font-size: 11px; letter-spacing: .26em; text-transform: uppercase; opacity: .9;
}
.band-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(10,12,16,.5)); }

/* ---------- 报告卡（行业深耕） ---------- */
.brief-note { font-size: 12px; color: var(--ink-40); letter-spacing: .04em; margin-top: 26px; }
.report-card { display: block; border-top: 1px solid var(--line); padding: 22px 0 0; transition: opacity .3s; }
.report-card .thumb { aspect-ratio: 16 / 10; overflow: hidden; border-radius: 4px; margin-bottom: 18px; }
.report-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.report-card:hover .thumb img { transform: scale(1.05); }
.report-card .r-tag { font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--red); font-weight: 600; }
.report-card h3 { font-size: 17.5px; font-weight: 700; line-height: 1.55; margin-top: 10px; }
.report-card p { font-size: 13px; color: var(--ink-60); margin-top: 8px; }
.report-card .r-meta { font-size: 11.5px; color: var(--ink-40); margin-top: 12px; letter-spacing: .08em; }

/* ---------- 联系页（DAVIS 分栏式） ---------- */
.contact-split { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100svh - var(--nav-h)); }
.contact-photo { position: relative; overflow: hidden; }
.contact-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.contact-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(10,12,16,.35)); }
.contact-photo .cap { position: absolute; left: 28px; bottom: 26px; z-index: 2; color: #fff; font-size: 11px; letter-spacing: .26em; text-transform: uppercase; opacity: .9; }
.contact-form-side { padding: calc(var(--nav-h) + 40px) clamp(28px, 4.5vw, 80px) 64px; background: #fff; }
.contact-form-side h1 { font-size: clamp(28px, 3vw, 44px); font-weight: 700; line-height: 1.3; margin: 14px 0 34px; }
.field { margin-bottom: 26px; }
.field label { display: block; font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-40); margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; border: 0; border-bottom: 1px solid var(--line); background: transparent;
  font-family: inherit; font-size: 16px; padding: 10px 0; color: var(--ink); outline: none; transition: border-color .3s;
}
.field input:focus, .field textarea:focus { border-color: var(--red); }
.field textarea { resize: vertical; min-height: 88px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.contact-note { font-size: 13.5px; font-weight: 600; line-height: 1.9; border-left: 2px solid var(--red); padding-left: 16px; margin: 8px 0 30px; color: var(--ink); }
.btn-send {
  background: var(--ink); color: #fff; border-radius: 3px; font-size: 13px; font-weight: 600;
  letter-spacing: .3em; text-transform: uppercase; padding: 16px 44px; transition: background .3s;
}
.btn-send:hover { background: var(--red); }
.contact-direct { margin-top: 44px; border-top: 1px solid var(--line); padding-top: 30px; display: grid; gap: 14px; }
.contact-direct .row { display: flex; justify-content: space-between; align-items: center; font-size: 14px; gap: 16px; flex-wrap: wrap; }
.contact-direct .row .k { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-40); }
.contact-direct .row .v { font-weight: 600; }
.wa-btn {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 10px;
  background: var(--red); color: #fff; border-radius: 999px; padding: 14px 28px;
  font-size: 14px; font-weight: 600; letter-spacing: .06em; transition: background .3s, transform .3s var(--ease);
}
.wa-btn:hover { background: var(--red-dark); transform: translateY(-2px); }
.wa-btn svg { width: 18px; height: 18px; fill: currentColor; }

/* ---------- 页尾 CTA + Footer ---------- */
.cta-band { background: var(--ink); color: #fff; text-align: left; position: relative; overflow: hidden; }
.cta-band .h-display { max-width: 15em; }
.cta-band .lead { color: rgba(255,255,255,.6); margin-top: 20px; }
.cta-band .btn-pill { margin-top: 36px; }
.cta-band .eq-line { position: absolute; right: -8%; top: 50%; width: 46%; opacity: .5; transform: translateY(-50%); pointer-events: none; }

footer { background: var(--ink); color: rgba(255,255,255,.72); border-top: 1px solid rgba(255,255,255,.1); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding: clamp(48px, 6vw, 80px) 0 40px; }
.footer-grid h5 { font-size: 11px; letter-spacing: .26em; text-transform: uppercase; color: rgba(255,255,255,.4); margin-bottom: 18px; }
.footer-grid a { display: block; font-size: 14px; padding: 5px 0; transition: color .3s; }
.footer-grid a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: #fff; margin-bottom: 18px; }
.footer-brand .brand-mark { width: 64px; height: auto; display: block; }
.footer-brand .zh { font-size: 15px; font-weight: 700; letter-spacing: .06em; display: block; }
.footer-brand .en { font-size: 9px; letter-spacing: .22em; opacity: .55; display: block; text-transform: uppercase; }
.footer-brand p, .footer-grid p { font-size: 13px; line-height: 1.9; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 11.5px; letter-spacing: .1em; color: rgba(255,255,255,.4);
}

/* ---------- 浮动 WhatsApp ---------- */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--red); color: #fff; border-radius: 999px; padding: 13px 22px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .1em;
  box-shadow: 0 10px 30px rgba(200,16,46,.35); transition: transform .3s var(--ease), background .3s;
}
.wa-float:hover { transform: translateY(-3px); background: var(--red-dark); }
.wa-float svg { width: 17px; height: 17px; fill: currentColor; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }

/* ---------- 品牌墙 ---------- */
.brand-wall { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); background: #fff; }
.brand-wall div {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 30px 20px; min-height: 118px; text-align: center;
  display: flex; align-items: center; justify-content: center;
}
.brand-wall img { max-height: 52px; max-width: 72%; object-fit: contain; filter: grayscale(1); opacity: .68; transition: filter .4s, opacity .4s; }
.brand-wall div:hover img { filter: none; opacity: 1; }
.brand-wall .more { font-size: 13px; font-weight: 600; letter-spacing: .1em; color: var(--ink-40); }
.brand-wall div:hover { color: var(--red); background: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .photo-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .photo-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .num-list { grid-template-columns: repeat(2, 1fr); }
  .brief-feature { grid-template-columns: 1fr; }
  .brief-feature .img { min-height: 260px; }
  .contact-split { grid-template-columns: 1fr; }
  .contact-photo { min-height: 300px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  /* 页面内联 style 强制了 4 列，移动端必须 2 列（logo 才不会缩到不可读） */
  .brand-wall { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 760px) {
  :root { --nav-h: 64px; }
  .nav-links {
    position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; align-items: flex-start;
    background: var(--paper); /* 不透明实底，保证任何页面背景上文字对比度 ≥4.5 */
    padding: 20px var(--gutter) 28px; gap: 6px; border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(26,24,21,.18);
    transform: translateY(-130%); transition: transform .45s var(--ease);
  }
  .nav-links.open { transform: none; }
  .nav-links a { flex-direction: row; gap: 10px; font-size: 16px; padding: 10px 0; color: var(--ink); }
  .nav-links a .sub { font-size: 9px; }
  /* 深色页（on-dark）下白色文字规则优先级更高，会盖住上面的墨色；
     面板是浅实底，必须强制改回深色文字（激活项保持赤道红） */
  .nav.on-dark:not(.solid) .nav-links a { color: var(--ink); }
  .nav.on-dark:not(.solid) .nav-links a.active { color: var(--red); }
  .menu-btn { display: flex; }
  .nav.on-dark:not(.solid) .menu-btn { color: #fff; }
  .lang-toggle { padding: 5px 11px; font-size: 11px; }
  .photo-grid.cols-3, .photo-grid.cols-4, .photo-grid.cols-2 { grid-template-columns: 1fr; }
  /* 页面内联 style 强制了 2 列（consulting/media），窄屏压回单列避免孤字断行 */
  .num-list, .num-list.cols-3 { grid-template-columns: 1fr !important; }
  /* kicker 英文字距收窄，减少「TEAM & / EXPERIENCE」式生硬断行 */
  .kicker { letter-spacing: .18em; }
  .archive-row { grid-template-columns: 76px 1fr auto; gap: 14px; }
  .archive-row .d { font-size: 17px; }
  .field-row { grid-template-columns: 1fr; }
  .hero-meta { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .wa-float span.t { display: none; }
  .wa-float { padding: 14px; }
}

/* 超窄屏（<420px）：隐藏头部 Logo 英文副标行并略缩图标，避免折行挤压 */
@media (max-width: 419px) {
  .brand-name .en { display: none; }
  .brand .brand-mark { width: 48px; }
}

/* 隐藏名片链接：与正文无异，悬停时才显现 */
.card-link { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .3s, color .3s; }
.card-link:hover { border-bottom-color: currentColor; }
.card-note { margin-top: 18px; font-size: 12px; color: var(--ink-40); letter-spacing: .08em; }

/* ================= 全站分享 ================= */
.share-fab {
  position: fixed; right: 24px; bottom: 96px; z-index: 1150; /* 高于简报阅读层(1100)，低于分享面板(1200) */
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ink); color: #FAF7F1; border: none; cursor: pointer;
  padding: 13px 18px; border-radius: 999px;
  font-family: inherit; font-size: 12px; letter-spacing: .12em;
  box-shadow: 0 10px 30px rgba(26,24,21,.22);
  transition: transform .3s var(--ease), background .3s;
}
.share-fab:hover { background: var(--red); transform: translateY(-2px); }
.share-fab svg { width: 16px; height: 16px; }

.share-sheet { position: fixed; inset: 0; z-index: 1200; pointer-events: none; }
.share-sheet.open { pointer-events: auto; }
.share-backdrop {
  position: absolute; inset: 0; background: rgba(26,24,21,.45);
  opacity: 0; transition: opacity .3s;
}
.share-sheet.open .share-backdrop { opacity: 1; }
.share-panel {
  position: absolute; left: 50%; bottom: 0; transform: translate(-50%, 105%);
  width: min(480px, 100%); background: var(--paper);
  border-radius: 18px 18px 0 0; padding: 26px 26px calc(26px + env(safe-area-inset-bottom));
  transition: transform .45s var(--ease), opacity .3s, visibility .3s;
  max-height: 86vh; overflow-y: auto;
  visibility: hidden; opacity: 0;
}
.share-sheet.open .share-panel { transform: translate(-50%, 0); visibility: visible; opacity: 1; }
@media (min-width: 720px) {
  .share-panel { top: 50%; bottom: auto; transform: translate(-50%, -42%); border-radius: 18px; }
  .share-sheet.open .share-panel { transform: translate(-50%, -50%); }
}
.share-close {
  position: absolute; top: 14px; right: 16px; border: none; background: none;
  font-size: 26px; line-height: 1; cursor: pointer; color: var(--ink-40);
}
.share-close:hover { color: var(--ink); }
.share-heading { font-size: 12px; letter-spacing: .26em; text-transform: uppercase; color: var(--ink-40); margin-bottom: 16px; }

.share-card {
  display: flex; gap: 14px; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; background: #fff; margin-bottom: 20px;
}
.share-card-img { flex: none; width: 108px; }
.share-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.share-card-body { padding: 12px 14px 12px 0; min-width: 0; }
.share-card-body h4 { font-size: 13.5px; font-weight: 700; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.share-card-body p { font-size: 11.5px; color: var(--ink-60); line-height: 1.6; margin-top: 5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.share-card-url { font-size: 10.5px; color: var(--ink-40); letter-spacing: .06em; margin-top: 7px; display: block; }

.share-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.share-options button {
  border: none; background: none; cursor: pointer; padding: 10px 4px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: inherit; border-radius: 10px; transition: background .25s;
}
.share-options button:hover { background: var(--paper-2); }
.share-options .ic {
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line);
  background-color: #fff; background-repeat: no-repeat; background-position: center; background-size: 20px 20px;
  transition: border-color .25s, transform .25s;
}
.share-options button:hover .ic { border-color: var(--red); transform: translateY(-2px); }
.share-options em { font-style: normal; font-size: 10.5px; color: var(--ink-60); letter-spacing: .04em; }

.ic-wechat   { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M9.5 3C5.4 3 2 5.9 2 9.4c0 2 1.1 3.8 2.8 5L4 17l2.8-1.5c.8.3 1.7.4 2.7.4h.4A6.3 6.3 0 0 1 9.7 14c0-3.3 3-6 6.8-6h.3C16 5.1 13 3 9.5 3zm-2.7 3.2a.9.9 0 1 1 0 1.8.9.9 0 0 1 0-1.8zm5.4 0a.9.9 0 1 1 0 1.8.9.9 0 0 1 0-1.8zM16.6 9.5c-3.2 0-5.9 2.2-5.9 5s2.7 5 5.9 5c.7 0 1.4-.1 2-.3l2.2 1.2-.6-2.1c1.4-1 2.3-2.4 2.3-3.9 0-2.7-2.7-4.9-5.9-4.9zm-2 2.4a.8.8 0 1 1 0 1.6.8.8 0 0 1 0-1.6zm4 0a.8.8 0 1 1 0 1.6.8.8 0 0 1 0-1.6z'/%3E%3C/svg%3E"); }
.ic-whatsapp { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M12 2a10 10 0 0 0-8.6 15.1L2 22l5-1.3A10 10 0 1 0 12 2zm0 18.2c-1.5 0-3-.4-4.3-1.2l-.3-.2-3 .8.8-2.9-.2-.3A8.2 8.2 0 1 1 12 20.2zm4.6-6.1c-.3-.1-1.5-.7-1.7-.8-.2-.1-.4-.1-.6.1-.2.3-.6.8-.8 1-.1.2-.3.2-.5.1a6.7 6.7 0 0 1-3.4-3c-.3-.4 0-.5.2-.8l.4-.5c.1-.2.2-.3.1-.5l-.8-1.9c-.2-.5-.4-.4-.6-.4h-.5c-.2 0-.5.1-.7.3-.2.3-.9.9-.9 2.2s.9 2.5 1 2.7c.1.2 1.8 2.8 4.4 3.9 2.6 1.1 2.6.8 3.1.7.5 0 1.5-.6 1.7-1.2.2-.6.2-1.1.2-1.2-.1-.1-.3-.2-.5-.3z'/%3E%3C/svg%3E"); }
.ic-facebook { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M13.5 21v-7h2.4l.4-3h-2.8V9.1c0-.9.3-1.5 1.6-1.5h1.3V4.9c-.3 0-1.2-.1-2.2-.1-2.2 0-3.7 1.3-3.7 3.8V11H8v3h2.5v7h3z'/%3E%3C/svg%3E"); }
.ic-x        { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M17.8 3h3.1l-6.8 7.8L22 21h-6.3l-4.9-6.4L5.2 21H2.1l7.3-8.3L2.4 3h6.4l4.4 5.9L17.8 3zm-1.1 16.1h1.7L7.7 4.7H5.9l10.8 14.4z'/%3E%3C/svg%3E"); }
.ic-linkedin { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M6.9 8.6H4V20h2.9V8.6zM5.4 3.5a1.7 1.7 0 1 0 0 3.4 1.7 1.7 0 0 0 0-3.4zM20 20h-2.9v-5.6c0-1.3-.5-2.2-1.7-2.2-.9 0-1.4.6-1.6 1.2-.1.2-.1.5-.1.8V20h-2.9V8.6h2.9v1.2c.4-.6 1.1-1.5 2.7-1.5 2 0 3.5 1.3 3.5 4.1V20z'/%3E%3C/svg%3E"); }
.ic-telegram { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M21.9 4.4 2.8 11.5c-.9.3-.9 1.4-.1 1.7l4.6 1.5 1.8 5.5c.3.8 1.2 1 1.8.4l2.6-2.5 4.8 3.6c.7.4 1.6.1 1.8-.7l3-15.3c.2-1-.7-1.7-1.4-1.3zM8.8 14.1l9.3-6.7c.3-.2.6.2.3.4l-7.7 7.2-.3 3-1.6-3.9z'/%3E%3C/svg%3E"); }
.ic-copy     { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%231A1815'%3E%3Cpath d='M9 9h11v12H9V9zm2 2v8h7v-8h-7zM15 3H4v12h2V5h9V3z'/%3E%3C/svg%3E"); }

.share-qr { text-align: center; margin-top: 18px; border-top: 1px solid var(--line); padding-top: 18px; }
.share-qr-box { display: inline-block; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px; line-height: 0; font-size: 11px; color: var(--ink-60); }
.share-qr-box img { width: 168px; height: 168px; }
.share-qr-tip { font-size: 11.5px; color: var(--ink-60); margin-top: 12px; }
.share-qr-copy {
  margin-top: 10px; border: 1px solid var(--ink); background: none; cursor: pointer;
  font-family: inherit; font-size: 11.5px; letter-spacing: .14em; padding: 9px 22px; border-radius: 999px;
  transition: background .25s, color .25s;
}
.share-qr-copy:hover { background: var(--ink); color: var(--paper); }

.share-toast {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  background: var(--ink); color: var(--paper); font-size: 12px; letter-spacing: .06em;
  padding: 9px 18px; border-radius: 999px; white-space: nowrap;
}

@media (max-width: 760px) {
  .share-fab { right: 16px; bottom: 88px; padding: 12px 14px; }
  .share-options { grid-template-columns: repeat(4, 1fr); }
}

/* ================= 简报详情阅读层 ================= */
.brief-reader {
  position: fixed; inset: 0; z-index: 1100; background: var(--paper);
  overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;
}
.brief-reader.open { opacity: 1; visibility: visible; transform: none; }
.br-top {
  position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; align-items: center;
  padding: 18px var(--gutter); background: rgba(250,247,241,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.br-top .br-home { display: flex; align-items: center; gap: 12px; font-size: 11px; letter-spacing: .26em; text-transform: uppercase; color: var(--ink-40); }
.br-top .br-home img { width: 34px; }
.br-close {
  border: 1px solid var(--line); background: none; border-radius: 999px; cursor: pointer;
  font-family: inherit; font-size: 12px; letter-spacing: .18em; color: var(--ink);
  padding: 10px 22px; display: inline-flex; align-items: center; gap: 8px;
  transition: background .25s, color .25s;
}
.br-close:hover { background: var(--ink); color: var(--paper); }
.br-body { max-width: 860px; margin: 0 auto; padding: clamp(40px,7vh,80px) var(--gutter) 60px; }
.br-date { font-size: 11.5px; letter-spacing: .3em; text-transform: uppercase; color: var(--red); font-weight: 600; }
.br-body h1 { font-size: clamp(26px, 3.6vw, 44px); font-weight: 900; line-height: 1.35; letter-spacing: -.01em; margin: 18px 0 0; }
.br-lead { font-size: clamp(14.5px, 1.4vw, 17px); line-height: 2; color: var(--ink-60); margin-top: 22px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.br-items { counter-reset: bri; }
.br-item { counter-increment: bri; display: grid; grid-template-columns: 64px 1fr; gap: 20px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.br-item::before {
  content: counter(bri, decimal-leading-zero); font-size: 13px; font-weight: 700; color: var(--red);
  letter-spacing: .1em; padding-top: 5px;
}
.br-item .tag { font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-40); }
.br-item h3 { font-size: 18px; font-weight: 700; line-height: 1.6; margin-top: 8px; }
.br-item p { font-size: 13.5px; line-height: 1.95; color: var(--ink-60); margin-top: 10px; }
.br-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.br-tags span { font-size: 11px; letter-spacing: .1em; border: 1px solid var(--line); border-radius: 999px; padding: 7px 16px; color: var(--ink-60); }
.br-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 44px; }
.br-nav a {
  flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 18px 22px;
  text-decoration: none; color: var(--ink); transition: border-color .25s, background .25s;
  background: #fff;
}
.br-nav a:hover { border-color: var(--red); }
.br-nav a .d { font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-40); display: block; margin-bottom: 6px; }
.br-nav a .t { font-size: 13.5px; font-weight: 600; line-height: 1.6; }
.br-nav a.next { text-align: right; }
.br-nav a.disabled { opacity: .35; pointer-events: none; }
.br-cta { text-align: center; margin-top: 48px; display: flex; justify-content: center; gap: 34px; flex-wrap: wrap; }
.br-cta a { color: var(--red); font-size: 13px; letter-spacing: .12em; text-decoration: none; border-bottom: 1px solid var(--red); padding-bottom: 3px; }
.br-cta a.br-poster { color: var(--ink); border-bottom-color: var(--ink); }
.br-cta a.br-poster:hover { color: var(--red); border-bottom-color: var(--red); }
@media (max-width: 760px) {
  .br-item { grid-template-columns: 1fr; gap: 6px; }
  .br-nav { flex-direction: column; }
  .br-nav a.next { text-align: left; }
}

/* ================= 视频卡片 ================= */
.video-card { display: block; text-decoration: none; color: var(--ink); }
.video-card .thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; border-radius: 4px; }
.video-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.video-card:hover .thumb img { transform: scale(1.05); }
.video-card .play {
  position: absolute; inset: 0; margin: auto; width: 62px; height: 62px; border-radius: 50%;
  background: rgba(26,24,21,.55); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  transition: background .3s, transform .3s var(--ease);
}
.video-card .play svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-card:hover .play { background: var(--red); transform: scale(1.08); }
.video-card .dur {
  position: absolute; right: 12px; bottom: 12px; font-size: 10.5px; letter-spacing: .08em;
  background: rgba(26,24,21,.66); color: #fff; border-radius: 4px; padding: 4px 9px;
}
.video-card h3 { font-size: 15.5px; font-weight: 700; line-height: 1.55; margin-top: 16px; }
.video-card .v-meta { font-size: 11.5px; color: var(--ink-40); letter-spacing: .1em; margin-top: 7px; text-transform: uppercase; }

/* ================= 联系表单发送方式 ================= */
.send-via { font-size: 12px; color: var(--ink-40); margin-top: 16px; line-height: 1.8; letter-spacing: .03em; }
.send-via a { color: var(--red); text-decoration: none; border-bottom: 1px solid transparent; }
.send-via a:hover { border-bottom-color: var(--red); }
.send-done { font-size: 12.5px; color: var(--red); margin-top: 12px; letter-spacing: .04em; font-weight: 500; }

/* ================= 按客户问题进入 · 三入口（紧凑版） ================= */
.path-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 44px); }
.path-item { display: block; border-top: 1px solid var(--ink); padding-top: 16px; transition: border-color .3s; }
.path-item:hover { border-top-color: var(--red); }
.path-item .no { font-size: 11px; letter-spacing: .2em; color: var(--red); font-weight: 600; }
.path-item h3 { font-size: 16.5px; font-weight: 700; margin: 10px 0 6px; line-height: 1.45; }
.path-item p { font-size: 12.5px; color: var(--ink-60); line-height: 1.75; }
.path-item .go { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--red); letter-spacing: .06em; }
.path-item .go::after { content: " →"; }
@media (max-width: 900px) { .path-row { grid-template-columns: 1fr; gap: 22px; } }

/* ================= 脱敏交付样例 ================= */
.sample-card { border-top: 1px solid var(--ink); padding-top: 20px; }
.sample-card .tag { font-size: 10.5px; letter-spacing: .24em; text-transform: uppercase; color: var(--red); font-weight: 600; display: block; margin-bottom: 12px; }
.sample-card h4 { font-size: 19px; font-weight: 700; margin-bottom: 14px; line-height: 1.5; }
.sample-card ul { list-style: none; margin: 0 0 14px; padding: 0; }
.sample-card li { font-size: 13px; color: var(--ink-60); line-height: 1.8; padding-left: 18px; position: relative; }
.sample-card li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--red); }
.sample-card .note { font-size: 11.5px; color: var(--ink-40); letter-spacing: .03em; }

/* ================= 联系页：需求类型与微信 ================= */
.topic-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 4px 0 22px; }
.topic-chip { position: relative; }
.topic-chip input { position: absolute; opacity: 0; pointer-events: none; }
.topic-chip label { display: inline-block; font-size: 12.5px; letter-spacing: .04em; color: var(--ink-60); border: 1px solid rgba(26,24,21,.25); border-radius: 999px; padding: 8px 16px; cursor: pointer; transition: all .25s; }
.topic-chip input:checked + label { background: var(--red); border-color: var(--red); color: #fff; }
.topic-chip label:hover { border-color: var(--red); color: var(--red); }
.topic-chip input:checked + label:hover { color: #fff; }
.wx-btn { display: inline-flex; align-items: center; gap: 10px; border: 1px solid rgba(26,24,21,.25); border-radius: 999px; padding: 12px 22px; font-size: 13.5px; letter-spacing: .04em; color: var(--ink); text-decoration: none; transition: all .25s; cursor: pointer; background: #fff; }
.wx-btn:hover { border-color: var(--red); color: var(--red); }
.wx-btn svg { width: 18px; height: 18px; fill: currentColor; }
.wx-btn .id { font-weight: 700; }

/* ================= 微信二维码 ================= */
.wx-qr { margin-top: 18px; }
.wx-qr img { width: 148px; height: auto; display: block; border: 1px solid rgba(26,24,21,.16); border-radius: 4px; }
.wx-qr .cap { font-size: 11.5px; color: var(--ink-40); letter-spacing: .03em; margin-top: 8px; }