/* =========================================================
   Mortise Capital — 独立静态站点样式
   无远端依赖。配色/字体沿用原站。
   navy #1B2B5B · Cormorant Garamond (serif) · Inter (sans)
   ========================================================= */
@import url("../fonts/fonts.css");

:root {
  --navy:        #1B2B5B;
  --navy-deep:   #0F1730;
  --navy-light:  #2A3F7A;
  --charcoal:    #2C2C2C;
  --silver:      #8A9AAF;
  --silver-2:    #C8CDD5;
  --bg-main:     #FAFAFA;
  --bg-section:  #F5F6F8;
  --divider:     #E4E7ED;
  --body-text:   #5A6070;
  --font-heading:"Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body:   "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius:      2px;
  --maxw:        1240px;
  --pad-x:       clamp(22px, 6vw, 80px);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  font-family:var(--font-body); color:var(--charcoal);
  background:var(--bg-main); line-height:1.6; font-weight:400;
  -webkit-font-smoothing:antialiased;
}
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }

.wrap { max-width:var(--maxw); margin:0 auto; padding-left:var(--pad-x); padding-right:var(--pad-x); }

/* eyebrow 小标签 */
.eyebrow {
  font-family:var(--font-body); font-size:12px; font-weight:600;
  letter-spacing:0.22em; text-transform:uppercase; color:var(--navy);
}
.eyebrow--light { color:var(--silver-2); }

/* serif 标题工具类 */
.serif { font-family:var(--font-heading); font-weight:300; letter-spacing:-0.02em; line-height:1.12; }

/* =========================================================
   HEADER / NAV
   ========================================================= */
.site-header {
  position:absolute; top:0; left:0; right:0; z-index:50;
}
.site-header.is-solid {                 /* 子页面: 实心浅色头 */
  position:sticky; background:rgba(255,255,255,0.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--divider);
}
.nav { display:flex; align-items:center; justify-content:space-between; height:74px; }
.brand { display:flex; align-items:baseline; gap:9px; }
.brand__mark { font-family:var(--font-body); font-weight:600; letter-spacing:0.28em; font-size:16px; }
.brand__sub  { font-family:var(--font-body); font-weight:400; letter-spacing:0.28em; font-size:11px; }
.nav__links { display:flex; align-items:center; gap:30px; }
.nav__links a {
  font-size:13px; letter-spacing:0.04em; color:inherit;
  opacity:0.85; transition:opacity .2s, color .2s;
}
.nav__links a:hover, .nav__links a.active { opacity:1; }
.nav__login {
  border:1px solid currentColor; border-radius:var(--radius);
  padding:7px 16px !important; opacity:0.75;
}
.nav__login:hover { opacity:1; }
.nav__toggle { display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav__toggle span { display:block; width:22px; height:2px; background:currentColor; margin:4px 0; }

/* 透明头 (首页 hero 上) 文字为浅色 */
.site-header:not(.is-solid) { color:#fff; }
.site-header:not(.is-solid) .brand__sub { color:var(--silver-2); }
/* 实心头文字为深色 */
.site-header.is-solid { color:var(--navy); }
.site-header.is-solid .brand__sub { color:var(--silver); }
.site-header.is-solid .nav__links a { color:var(--charcoal); }

/* =========================================================
   HERO (首页大图)
   ========================================================= */
.hero { position:relative; min-height:90vh; display:flex; align-items:center; overflow:hidden; }
.hero__bg {
  position:absolute; inset:0; z-index:0;
  background-position:center 38%; background-size:cover; background-repeat:no-repeat;
  background-image:url("../img/hero-london.jpg");  /* 兜底 */
  background-image:image-set(
    url("../img/hero-london.webp") type("image/webp"),
    url("../img/hero-london.jpg")  type("image/jpeg"));
  filter:saturate(0.85) brightness(0.9); transform:scale(1.03);
}
.hero__scrim {
  position:absolute; inset:0; z-index:1;
  background:
    linear-gradient(90deg,  rgba(15,23,48,0.82) 0%, rgba(15,23,48,0.45) 45%, rgba(15,23,48,0.18) 100%),
    linear-gradient(180deg, rgba(27,43,91,0.28) 0%, rgba(20,30,60,0.5) 60%, rgba(15,23,48,0.85) 100%);
}
.hero .wrap { position:relative; z-index:2; width:100%; }
.hero__eyebrow { margin-bottom:18px; }
.hero__title { color:#fff; font-size:clamp(2.8rem, 5.2vw, 4.5rem); margin:0; }
.hero__title .accent { color:var(--silver-2); }
/* Cormorant 花体连字符是斜的/歪的，这一个字符改用正文 Inter 的平直横线 */
.hero__title .hero__hy { font-family:var(--font-body); font-weight:300; margin:0 0.04em; }

/* 首页 About / Mission 图文板块 */
.prose { font-size:15px; line-height:1.8; color:var(--body-text); max-width:760px; margin-top:18px; }
.about-grid { display:grid; grid-template-columns:1.2fr 0.8fr; gap:52px; align-items:center; }
.about-grid__text .section-title { margin-top:14px; }
.about-grid__img { display:block; width:100%; max-width:380px; height:auto; aspect-ratio:4/3;
  object-fit:cover; margin-left:auto; border-radius:var(--radius);
  filter:grayscale(1) contrast(1.05) brightness(0.96); }
@media (max-width:768px){
  .about-grid { grid-template-columns:1fr; gap:24px; }
  .about-grid__img { max-width:100%; aspect-ratio:16/9; order:-1; }
}
.hero__divider { height:1px; width:100%; max-width:500px; background:rgba(255,255,255,0.32); margin:28px 0; }
.hero__lead { font-size:16px; line-height:1.7; max-width:480px; color:rgba(255,255,255,0.8); }
.hero__cta { display:flex; flex-wrap:wrap; gap:14px; margin-top:38px; }

/* 按钮 */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-body); font-size:13px; font-weight:500; letter-spacing:0.04em;
  padding:13px 26px; border-radius:var(--radius); transition:all .2s; cursor:pointer; border:1px solid transparent;
}
.btn--primary { background:#fff; color:var(--navy); }
.btn--primary:hover { background:var(--silver-2); }
.btn--navy { background:var(--navy); color:#fff; }
.btn--navy:hover { background:var(--navy-light); }
.btn--ghost { border-color:rgba(255,255,255,0.4); color:#fff; }
.btn--ghost:hover { background:rgba(255,255,255,0.1); }
.btn--ghost-dark { border-color:var(--divider); color:var(--navy); }
.btn--ghost-dark:hover { border-color:var(--silver); }
.btn--block { width:100%; justify-content:center; padding:14px; }

/* =========================================================
   子页面页眉 (page hero, 深色窄条)
   ========================================================= */
.page-hero { background:var(--navy-deep); color:#fff; padding:130px 0 64px; }
.page-hero .eyebrow { color:var(--silver-2); margin-bottom:16px; }
.page-hero h1 { font-size:clamp(2.2rem, 4vw, 3.2rem); color:#fff; }
.page-hero p { margin-top:18px; max-width:620px; color:rgba(255,255,255,0.78); font-size:16px; line-height:1.7; }

/* Insights hero：左深蓝文字 + 右侧内嵌航拍货轮照片 */
.page-hero--ship { position:relative; overflow:hidden; padding:124px 0 70px; }
.page-hero__photo { position:absolute; inset:0; z-index:0;
  background-size:cover; background-position:center right; }
.page-hero--ship::after { content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(90deg,
    #0F1730 0%, #0F1730 30%,
    rgba(15,23,48,0.92) 42%,
    rgba(15,23,48,0.55) 60%,
    rgba(15,23,48,0.12) 82%,
    rgba(15,23,48,0.04) 100%); }
.page-hero--ship .wrap { position:relative; z-index:2; }
.page-hero__inner { max-width:560px; }
@media (max-width:760px) {
  .page-hero--ship::after { background:linear-gradient(180deg,
    rgba(15,23,48,0.78) 0%, rgba(15,23,48,0.62) 55%, rgba(15,23,48,0.86) 100%); }
  .page-hero__inner { max-width:none; }
}

/* =========================================================
   通用 section
   ========================================================= */
.section { padding:clamp(60px, 8vw, 104px) 0; }
.section--alt { background:var(--bg-section); }
.section-head { max-width:760px; margin-bottom:52px; }
.section-head .eyebrow { display:block; margin-bottom:16px; }
.section-title { font-family:var(--font-heading); font-weight:300; letter-spacing:-0.02em; line-height:1.14; font-size:clamp(1.8rem, 3vw, 2.6rem); color:var(--navy); }
.section-intro { margin-top:18px; color:var(--body-text); font-size:16px; line-height:1.7; max-width:640px; }

/* =========================================================
   卡片网格 (research / insights)
   ========================================================= */
.grid { display:grid; gap:26px; }
.grid--3 { grid-template-columns:repeat(3, 1fr); }
.grid--2 { grid-template-columns:repeat(2, 1fr); }
.grid--4 { grid-template-columns:repeat(4, 1fr); }

.card {
  background:#fff; border:1px solid var(--divider); border-radius:var(--radius);
  padding:30px 28px; display:flex; flex-direction:column;
  transition:border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color:var(--silver); transform:translateY(-3px); box-shadow:0 10px 30px -18px rgba(27,43,91,0.4); }
.card__tag { font-size:11px; font-weight:600; letter-spacing:0.18em; text-transform:uppercase; color:var(--navy-light); margin-bottom:16px; }
.card__title { font-family:var(--font-heading); font-weight:500; font-size:1.42rem; line-height:1.24; color:var(--charcoal); margin-bottom:13px; }
.card__desc { font-size:14px; line-height:1.65; color:var(--body-text); flex:1; }
.card__meta { margin-top:20px; display:flex; align-items:center; justify-content:space-between; }
.card__date { font-size:12px; color:var(--silver); letter-spacing:0.03em; }
.card__more { font-size:13px; font-weight:500; color:var(--navy); letter-spacing:0.03em; }

/* =========================================================
   四步流程 (approach)
   ========================================================= */
.steps { display:grid; grid-template-columns:repeat(4, 1fr); gap:0; border-top:1px solid var(--divider); }
.step { padding:34px 26px 34px 0; border-right:1px solid var(--divider); }
.step:last-child { border-right:0; padding-right:0; }
.step__num { font-family:var(--font-heading); font-size:2.4rem; font-weight:300; color:var(--navy); opacity:0.35; line-height:1; }
.step__title { margin-top:18px; font-family:var(--font-heading); font-weight:500; font-size:1.3rem; color:var(--charcoal); }
.step__desc { margin-top:10px; font-size:13.5px; line-height:1.6; color:var(--body-text); }

/* =========================================================
   团队
   ========================================================= */
.member { background:#fff; border:1px solid var(--divider); border-radius:var(--radius); padding:30px 26px; transition:border-color .2s, transform .2s, box-shadow .2s; }
.member:hover { border-color:var(--silver); transform:translateY(-3px); box-shadow:0 10px 30px -18px rgba(27,43,91,0.4); }
.member__head { display:flex; align-items:center; gap:14px; }
.member__avatar { flex:0 0 auto; width:48px; height:48px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--navy); color:#fff; font-family:var(--font-heading); font-weight:500; font-size:1.05rem; letter-spacing:0.04em; }
.member__name { font-family:var(--font-heading); font-weight:500; font-size:1.35rem; color:var(--navy); line-height:1.15; }
.member__role { margin-top:3px; font-size:11px; font-weight:600; letter-spacing:0.14em; text-transform:uppercase; color:var(--navy-light); }
.member__uni { margin-top:14px; padding-top:14px; border-top:1px solid var(--divider); font-size:12px; font-weight:600; letter-spacing:0.1em; text-transform:uppercase; color:var(--silver); }
.member__bio { margin-top:12px; font-size:13.5px; line-height:1.65; color:var(--body-text); }
.member__tags { margin-top:16px; display:flex; flex-wrap:wrap; gap:8px; }
.member__tag { font-size:10.5px; font-weight:600; letter-spacing:0.08em; text-transform:uppercase; color:var(--navy-light);
  background:var(--bg-section); border:1px solid var(--divider); border-radius:999px; padding:5px 11px; }

/* 价值观/特性列表 */
.feature { padding:28px 0; border-top:1px solid var(--divider); }
.feature h3 { font-family:var(--font-heading); font-weight:500; font-size:1.4rem; color:var(--navy); margin-bottom:10px; }
.feature p { font-size:14.5px; line-height:1.7; color:var(--body-text); max-width:560px; }

/* =========================================================
   partners
   ========================================================= */
.partner { background:#fff; border:1px solid var(--divider); border-radius:var(--radius); padding:34px 30px; }
.partner__logo { height:100px; margin-bottom:22px;
  background:url("../img/essec-hedge-fund.png") left center/contain no-repeat; }
.partner__name { font-family:var(--font-heading); font-weight:500; font-size:1.5rem; color:var(--navy); margin-bottom:12px; }
.partner__desc { font-size:14.5px; line-height:1.7; color:var(--body-text); }

/* Trading 页卡片 */
.tcard { background:#fff; border:1px solid var(--divider); border-radius:var(--radius); padding:34px 32px;
  transition:border-color .2s, transform .2s, box-shadow .2s; }
.tcard:hover { border-color:var(--silver); transform:translateY(-3px); box-shadow:0 10px 30px -18px rgba(27,43,91,0.4); }
.tcard__head { display:flex; align-items:center; gap:16px; margin-bottom:22px; }
.tcard__ico { flex:0 0 auto; width:52px; height:52px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--bg-section); border:1px solid var(--divider); color:var(--navy); }
.tcard__ico svg { width:24px; height:24px; }
.tcard__title { font-family:var(--font-heading); font-weight:500; font-size:1.6rem; color:var(--navy); }
.tcard__list { list-style:none; margin:0; padding:0; }
.tcard__list li { position:relative; padding-left:22px; margin-bottom:14px; font-size:14.5px; line-height:1.6; color:var(--body-text); }
.tcard__list li::before { content:""; position:absolute; left:2px; top:9px; width:6px; height:6px; border-radius:50%; background:var(--silver); }

/* =========================================================
   Contact 页：左主栏 + 右 Get in Touch 卡片
   ========================================================= */
.contact-grid { display:grid; grid-template-columns:1.55fr 0.85fr; gap:56px; align-items:start; }
.contact-main .prose { margin-top:16px; color:var(--body-text); font-size:15.5px; line-height:1.78; max-width:640px; }
.contact-block { margin-top:38px; padding-top:34px; border-top:1px solid var(--divider); }
.contact-block .eyebrow { display:block; margin-bottom:16px; }
.contact-block__title { font-family:var(--font-heading); font-weight:500; font-size:1.5rem; color:var(--navy); margin-bottom:6px; }
.chips { display:flex; flex-wrap:wrap; gap:11px; }
.chip { font-size:11px; font-weight:600; letter-spacing:0.1em; text-transform:uppercase; color:var(--navy);
  background:var(--bg-section); border:1px solid var(--divider); border-radius:999px; padding:9px 18px;
  transition:border-color .2s, background .2s; }
.chip:hover { border-color:var(--silver); background:#fff; }
.value-list { list-style:none; margin:0; padding:0; }
.value-list li { position:relative; padding-left:24px; margin-bottom:13px; font-size:15px; line-height:1.6; color:var(--body-text); }
.value-list li::before { content:""; position:absolute; left:2px; top:9px; width:6px; height:6px; border-radius:50%; background:var(--navy); opacity:.55; }

.gt { background:#fff; border:1px solid var(--divider); border-radius:var(--radius); padding:34px 30px; position:sticky; top:96px; }
.gt__head { display:flex; align-items:center; gap:14px; margin-bottom:16px; }
.gt__head-ico { flex:0 0 auto; width:46px; height:46px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--navy); color:#fff; }
.gt__head-ico svg { width:22px; height:22px; }
.gt__title { font-family:var(--font-heading); font-weight:500; font-size:1.55rem; color:var(--navy); }
.gt__intro { font-size:14px; line-height:1.65; color:var(--body-text); margin-bottom:6px; }
.gt__rows { margin:18px 0 8px; }
.gt__row { display:flex; align-items:center; gap:14px; padding:14px 0; border-top:1px solid var(--divider); text-decoration:none;
  transition:transform .18s; }
.gt__row:last-child { border-bottom:1px solid var(--divider); }
.gt__row:hover { transform:translateX(3px); }
.gt__ico { flex:0 0 auto; width:34px; height:34px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--bg-section); border:1px solid var(--divider); color:var(--navy); transition:background .2s, color .2s; }
.gt__ico svg { width:17px; height:17px; }
.gt__row:hover .gt__ico { background:var(--navy); color:#fff; }
.gt__text { display:flex; flex-direction:column; line-height:1.3; }
.gt__label { font-size:10.5px; font-weight:600; letter-spacing:0.12em; text-transform:uppercase; color:var(--navy-light); }
.gt__val { font-size:14.5px; color:var(--charcoal); margin-top:2px; }
.gt__note { font-size:13px; color:var(--body-text); opacity:.8; margin:16px 0 22px; }
@media (max-width:860px) {
  .contact-grid { grid-template-columns:1fr; gap:44px; }
  .gt { position:static; }
}

/* =========================================================
   Insights 页：Browse by Asset Class 筛选行 + 配图卡片
   ========================================================= */
.acfilter-sub { margin-top:8px; color:var(--body-text); font-size:14px; }
.acfilter-row { display:grid; grid-template-columns:repeat(5,1fr); gap:16px; margin-top:24px; }
.acfilter { display:flex; align-items:center; gap:10px; padding:15px 15px; background:#fff;
  border:1px solid var(--divider); border-radius:var(--radius); text-decoration:none;
  transition:border-color .2s, transform .2s, box-shadow .2s, background .2s; }
.acfilter:hover { border-color:var(--navy); transform:translateY(-3px); box-shadow:0 10px 26px -16px rgba(27,43,91,0.45); }
.acfilter__ico { flex:0 0 auto; width:30px; height:30px; color:var(--navy); display:flex; align-items:center; justify-content:center; }
.acfilter__ico svg { width:22px; height:22px; }
.acfilter__label { flex:1 1 auto; font-size:13.5px; font-weight:600; letter-spacing:0.01em; color:var(--charcoal); white-space:nowrap; }
.acfilter__arrow { flex:0 0 auto; color:var(--navy-light); font-size:15px; transition:transform .2s; }
.acfilter:hover .acfilter__arrow { transform:translateX(4px); }

.icard-row { display:grid; grid-template-columns:repeat(5,1fr); gap:16px; }
.icard { display:flex; flex-direction:column; background:#fff; border:1px solid var(--divider);
  border-radius:var(--radius); overflow:hidden; text-decoration:none;
  transition:border-color .2s, transform .2s, box-shadow .2s; }
.icard:hover { border-color:var(--silver); transform:translateY(-4px); box-shadow:0 16px 38px -20px rgba(27,43,91,0.5); }
.icard__body { display:flex; flex-direction:column; flex:1 1 auto; padding:22px 20px 18px; }
.icard__tag { font-size:10px; font-weight:600; letter-spacing:0.16em; text-transform:uppercase; color:var(--navy-light); margin-bottom:9px; }
.icard__title { font-family:var(--font-heading); font-weight:500; font-size:1.12rem; line-height:1.24; color:var(--charcoal); margin-bottom:9px; }
.icard__desc { font-size:12.5px; line-height:1.6; color:var(--body-text); margin-bottom:16px; }
.icard__foot { margin-top:auto; display:flex; align-items:center; justify-content:space-between; gap:8px; }
.icard__foot .card__more { font-size:12px; }
.icard__pill { flex:0 0 auto; font-size:9.5px; font-weight:600; letter-spacing:0.06em; text-transform:uppercase; color:var(--navy-light);
  background:var(--bg-section); border:1px solid var(--divider); border-radius:999px; padding:4px 9px; }
@media (max-width:900px) {
  .acfilter-row, .icard-row { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:560px) {
  .acfilter-row, .icard-row { grid-template-columns:1fr; }
}

/* =========================================================
   表单 (contact / auth)
   ========================================================= */
.form { display:flex; flex-direction:column; gap:18px; max-width:460px; }
.field label { display:block; font-size:12px; font-weight:600; letter-spacing:0.08em; text-transform:uppercase; color:var(--navy); margin-bottom:8px; }
.field input, .field textarea {
  width:100%; font-family:var(--font-body); font-size:15px; color:var(--charcoal);
  padding:12px 14px; background:#fff; border:1px solid var(--divider); border-radius:var(--radius);
  transition:border-color .2s;
}
.field input:focus, .field textarea:focus { outline:none; border-color:var(--navy); }
.field textarea { min-height:130px; resize:vertical; }
.form__note { font-size:13px; color:var(--silver); }
.form__hidden-msg { display:none; padding:13px 16px; background:var(--bg-section); border:1px solid var(--divider); border-radius:var(--radius); font-size:14px; color:var(--navy); }

/* auth 卡片 */
.auth { min-height:calc(100vh - 74px); display:flex; align-items:center; }
.auth__card { width:100%; max-width:420px; margin:0 auto; padding:44px 38px; background:#fff; border:1px solid var(--divider); border-radius:var(--radius); }
.auth__title { font-family:var(--font-heading); font-weight:400; font-size:2rem; color:var(--navy); margin-bottom:8px; }
.auth__sub { font-size:14px; color:var(--body-text); margin-bottom:28px; }
.auth__alt { margin-top:22px; font-size:13px; color:var(--body-text); text-align:center; }
.auth__alt a { color:var(--navy); font-weight:500; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background:var(--navy-deep); color:rgba(255,255,255,0.72); padding:60px 0 34px; }
.footer-top { display:flex; flex-wrap:wrap; gap:40px; justify-content:space-between; }
.footer-brand { max-width:320px; }
.footer-brand .brand__mark, .footer-brand .brand__sub { color:#fff; }
.footer-tag { margin-top:16px; font-style:italic; font-family:var(--font-heading); font-size:1.1rem; color:var(--silver-2); }
.footer-cols { display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h4 { font-size:11px; letter-spacing:0.18em; text-transform:uppercase; color:var(--silver); margin-bottom:16px; }
.footer-col a { display:block; font-size:13.5px; color:rgba(255,255,255,0.72); margin-bottom:10px; transition:color .2s; }
.footer-col a:hover { color:#fff; }
.footer-bottom { margin-top:48px; padding-top:24px; border-top:1px solid rgba(255,255,255,0.12); display:flex; flex-wrap:wrap; gap:12px; justify-content:space-between; font-size:12px; color:var(--silver); }

/* 页脚社交图标：悬浮显示详情 tooltip + 上浮动态效果，点击跳转 */
.socials { display:flex; gap:14px; margin-top:22px; }
.social { position:relative; display:inline-flex; align-items:center; justify-content:center;
  width:42px; height:42px; border-radius:50%; color:rgba(255,255,255,0.78);
  border:1px solid rgba(255,255,255,0.18); background:rgba(255,255,255,0.04);
  transition:transform .22s ease, color .22s, background .22s, border-color .22s; }
.social__ico { width:20px; height:20px; display:block; }
.social__ico svg { width:100%; height:100%; display:block; }
.social:hover { transform:translateY(-5px); color:#fff; background:var(--navy-light); border-color:var(--navy-light); }
.social--xhs:hover { background:#FF2442; border-color:#FF2442; }   /* 小红书品牌红 */
/* tooltip：用 data-tip 内容，悬浮上滑淡入 */
.social::after { content:attr(data-tip); position:absolute; bottom:calc(100% + 10px); left:50%;
  transform:translate(-50%, 6px); white-space:nowrap; background:#fff; color:var(--navy);
  font-size:12px; font-weight:500; letter-spacing:0.02em; padding:6px 11px; border-radius:4px;
  box-shadow:0 6px 20px -6px rgba(0,0,0,0.45); opacity:0; pointer-events:none;
  transition:opacity .2s ease, transform .2s ease; }
.social::before { content:""; position:absolute; bottom:calc(100% + 4px); left:50%;
  transform:translateX(-50%); border:5px solid transparent; border-top-color:#fff; opacity:0; transition:opacity .2s; }
.social:hover::after { opacity:1; transform:translate(-50%, 0); }
.social:hover::before { opacity:1; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:880px) {
  .nav__links { position:fixed; inset:0 0 0 auto; width:min(78vw,320px); flex-direction:column; align-items:flex-start;
    gap:22px; background:var(--navy-deep); color:#fff; padding:90px 32px; transform:translateX(100%); transition:transform .28s ease; }
  .nav__links.open { transform:translateX(0); }
  .nav__links a { color:#fff !important; opacity:0.9; font-size:15px; }
  .nav__toggle { display:block; z-index:60; }
  .grid--3, .grid--4 { grid-template-columns:1fr 1fr; }
  .steps { grid-template-columns:1fr 1fr; }
  .step { border-right:0; border-bottom:1px solid var(--divider); padding-right:0; }
  .hero__scrim { background:linear-gradient(180deg, rgba(15,23,48,0.55) 0%, rgba(15,23,48,0.88) 100%); }
}
@media (max-width:560px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns:1fr; }
  .steps { grid-template-columns:1fr; }
  .footer-cols { gap:40px; }
}