/* ==========================================================================
   MentoringCo 盟珂 · 企业官网样式
   风格：简约大气 · 深蓝墨色 + 香槟金点缀
   ========================================================================== */

:root {
  --ink: #0d1b2a;
  --ink-2: #1b2a3d;
  --ink-3: #33475e;
  --muted: #6b7c8f;
  --line: #e3e8ee;
  --line-2: #eef2f6;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --bg-deep: #0d1b2a;
  --gold: #b8945f;
  --gold-2: #d4b483;
  --gold-soft: #faf6ef;
  --accent: #1a4d8f;
  --radius: 4px;
  --maxw: 1200px;
  --shadow-sm: 0 1px 2px rgba(13, 27, 42, .05);
  --shadow: 0 12px 40px rgba(13, 27, 42, .09);
  --shadow-lg: 0 24px 70px rgba(13, 27, 42, .13);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --serif: "Songti SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink-2);
  background: var(--bg);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- 布局 ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.section { padding: 104px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--bg-deep); color: #e8eef5; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 200;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line-2);
  transition: box-shadow .3s;
}
.nav.is-scrolled { box-shadow: 0 2px 20px rgba(13, 27, 42, .07); }
.nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 32px;
  height: 92px; display: flex; align-items: center; gap: 48px;
}
.brand { display: flex; align-items: center; flex-shrink: 0; }

/* 品牌 Logo —— 完整图片作为整体呈现，不做任何拆分或裁切 */
.brand__logo {
  display: block; width: auto; height: 66px; max-width: 100%;
  object-fit: contain; object-position: left center;
}
/* 页脚 Logo 置于深色底上，加白色衬底保证可读性 */
.brand__logo--footer {
  height: 75px; background: #fff; border-radius: 4px;
  padding: 6px 10px; box-sizing: content-box;
}

.nav__menu { display: flex; gap: 38px; margin-left: auto; }
.nav__link {
  font-size: 14.5px; color: var(--ink-3); font-weight: 500;
  position: relative; padding: 6px 0; transition: color .22s; white-space: nowrap;
}
.nav__link::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--gold); transition: width .28s ease;
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after, .nav__link.is-active::after { width: 100%; }
.nav__link.is-active { color: var(--ink); font-weight: 600; }

.nav__actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

/* 用户下拉 */
.userbox { position: relative; }
.userbox__btn {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 14px 7px 8px; border-radius: 100px;
  border: 1px solid var(--line); background: #fff;
  font-size: 13.5px; color: var(--ink-2); transition: all .2s;
}
.userbox__btn:hover { border-color: var(--ink-3); box-shadow: var(--shadow-sm); }
.userbox__avatar {
  width: 27px; height: 27px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(140deg, var(--ink) 0%, var(--ink-3) 100%);
  color: #fff; font-size: 12px; font-weight: 600;
  display: grid; place-items: center; text-transform: uppercase;
}
.userbox__menu {
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 216px;
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  box-shadow: var(--shadow); padding: 6px; display: none;
}
.userbox.is-open .userbox__menu { display: block; animation: drop .18s ease; }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
.userbox__head { padding: 11px 13px 12px; border-bottom: 1px solid var(--line-2); margin-bottom: 6px; }
.userbox__mail { font-size: 12.5px; color: var(--muted); word-break: break-all; line-height: 1.5; }
.userbox__item {
  display: flex; align-items: center; gap: 9px; width: 100%;
  padding: 9px 13px; border-radius: 5px; font-size: 13.5px;
  color: var(--ink-2); text-align: left; transition: background .18s;
}
.userbox__item:hover { background: var(--bg-soft); }
.userbox__item--danger { color: #b4453c; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius);
  font-size: 14.5px; font-weight: 600; letter-spacing: .2px;
  transition: all .24s ease; white-space: nowrap; line-height: 1;
}
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: var(--ink-3); box-shadow: 0 8px 24px rgba(13, 27, 42, .22); transform: translateY(-1px); }
.btn--gold { background: var(--gold); color: #fff; }
.btn--gold:hover { background: #a5824f; box-shadow: 0 8px 24px rgba(184, 148, 95, .32); transform: translateY(-1px); }
.btn--outline { border: 1px solid var(--line); color: var(--ink-2); background: #fff; }
.btn--outline:hover { border-color: var(--ink); color: var(--ink); }
.btn--ghost { border: 1px solid rgba(255, 255, 255, .28); color: #fff; }
.btn--ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .5); }
.btn--sm { padding: 9px 18px; font-size: 13.5px; }
.btn--block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ---------- 通用排版 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 20px;
}
.eyebrow::before { content: ''; width: 26px; height: 1px; background: var(--gold); }
.section--dark .eyebrow { color: var(--gold-2); }
.section--dark .eyebrow::before { background: var(--gold-2); }

.h1 { font-size: clamp(34px, 5vw, 58px); font-weight: 700; line-height: 1.18; letter-spacing: -1.2px; color: var(--ink); }
.h2 { font-size: clamp(27px, 3.4vw, 40px); font-weight: 700; line-height: 1.26; letter-spacing: -.7px; color: var(--ink); }
.h3 { font-size: 20px; font-weight: 650; line-height: 1.4; color: var(--ink); letter-spacing: -.2px; }
.section--dark .h1, .section--dark .h2, .section--dark .h3 { color: #fff; }
.lead { font-size: 17px; color: var(--muted); line-height: 1.85; }
.section--dark .lead { color: #a8b8c9; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.maxw-sm { max-width: 680px; }
.maxw-md { max-width: 860px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #0d1b2a 0%, #17293f 52%, #21384f 100%);
  color: #fff; padding: 122px 0 116px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 78% 22%, rgba(184, 148, 95, .17) 0%, transparent 46%),
    radial-gradient(circle at 12% 82%, rgba(26, 77, 143, .3) 0%, transparent 52%);
}
.hero::after {
  content: ''; position: absolute; inset: 0; opacity: .35;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 82% 72% at 50% 42%, #000 34%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 82% 72% at 50% 42%, #000 34%, transparent 100%);
}
.hero .wrap { position: relative; z-index: 2; }
.hero__tag {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 17px; border-radius: 100px; margin-bottom: 30px;
  border: 1px solid rgba(212, 180, 131, .34);
  background: rgba(212, 180, 131, .09);
  font-size: 12.5px; letter-spacing: 1.3px; color: var(--gold-2); font-weight: 500;
}
.hero__tag .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--gold-2);
  animation: pulse 2.4s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.hero h1 { color: #fff; max-width: 940px; }
.hero h1 .u {
  background: linear-gradient(180deg, transparent 66%, rgba(184, 148, 95, .42) 66%);
  padding: 0 4px;
}
.hero__desc { margin-top: 28px; font-size: 17.5px; color: #a8b8c9; max-width: 660px; line-height: 1.9; }
.hero__cta { display: flex; gap: 14px; margin-top: 42px; flex-wrap: wrap; }

.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin-top: 76px; background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1); border-radius: 6px; overflow: hidden;
}
.hero__stat { background: rgba(255, 255, 255, .032); padding: 28px 26px; }
.hero__stat b {
  display: block; font-size: 38px; font-weight: 700; color: #fff;
  line-height: 1.1; letter-spacing: -1.5px;
}
.hero__stat b .unit { font-size: 19px; font-weight: 600; margin-left: 3px; color: var(--gold-2); letter-spacing: 0; }
.hero__stat span { display: block; margin-top: 9px; font-size: 13px; color: #8fa3b8; letter-spacing: .5px; }

/* ---------- 页面头部（内页） ---------- */
.pagehead {
  background: linear-gradient(150deg, #0d1b2a 0%, #1b3452 100%);
  padding: 84px 0 76px; color: #fff; position: relative; overflow: hidden;
}
.pagehead::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 84% 34%, rgba(184, 148, 95, .16) 0%, transparent 48%);
}
.pagehead .wrap { position: relative; z-index: 2; }
.pagehead h1 { color: #fff; font-size: clamp(30px, 4vw, 46px); letter-spacing: -1px; line-height: 1.2; }
.pagehead p { margin-top: 20px; color: #9db0c6; font-size: 16.5px; max-width: 680px; line-height: 1.85; }

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

.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: 6px; padding: 34px 30px;
  transition: all .3s cubic-bezier(.2, .8, .3, 1);
}
.card:hover { border-color: rgba(184, 148, 95, .5); box-shadow: var(--shadow); transform: translateY(-4px); }
.card__icon {
  width: 46px; height: 46px; border-radius: 5px; margin-bottom: 22px;
  background: var(--gold-soft); color: var(--gold);
  display: grid; place-items: center;
}
.card__icon svg { width: 22px; height: 22px; stroke-width: 1.7; }
.card p { margin-top: 12px; color: var(--muted); font-size: 14.5px; line-height: 1.8; }
.card__num {
  font-family: var(--serif); font-size: 13px; font-weight: 700;
  color: var(--gold); letter-spacing: 2px; margin-bottom: 16px; display: block;
}

/* 数字带 */
.statband {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line);
  border-radius: 6px; overflow: hidden;
}
.statband__item { background: #fff; padding: 36px 28px; text-align: center; }
.statband__item b {
  display: block; font-size: 40px; font-weight: 700; color: var(--ink);
  line-height: 1.1; letter-spacing: -1.6px;
}
.statband__item b .unit { font-size: 18px; color: var(--gold); margin-left: 2px; letter-spacing: 0; }
.statband__item span { display: block; margin-top: 10px; font-size: 13px; color: var(--muted); }

/* ---------- 产品 / 认证 列表 ---------- */
.cert-group {
  border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
  background: #fff; margin-bottom: 22px;
}
.cert-group__head {
  padding: 25px 30px; background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.cert-group__badge {
  font-size: 11px; font-weight: 700; letter-spacing: 1.6px;
  padding: 5px 11px; border-radius: 3px; text-transform: uppercase;
}
.badge--us { background: #eaf1fb; color: #1a4d8f; }
.badge--eu { background: #eef4ee; color: #2f6b3d; }
.badge--km { background: var(--gold-soft); color: var(--gold); }
.cert-group__title { font-size: 17px; font-weight: 650; color: var(--ink); }
.cert-group__sub { font-size: 12.5px; color: var(--muted); margin-left: auto; letter-spacing: .4px; }
.cert-group__body { padding: 10px 30px 26px; }

.cert-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 17px 0; border-bottom: 1px solid var(--line-2);
}
.cert-item:last-child { border-bottom: none; }
.cert-item__idx {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--bg-soft); color: var(--ink-3);
  display: grid; place-items: center; font-size: 11.5px; font-weight: 700;
  margin-top: 2px;
}
.cert-item__name { font-size: 15px; font-weight: 600; color: var(--ink); }
.cert-item__en { font-size: 13px; color: var(--muted); margin-top: 3px; letter-spacing: .1px; }

/* 课程列表 */
.course-item {
  display: flex; align-items: center; gap: 18px;
  padding: 21px 24px; border: 1px solid var(--line); border-radius: 5px;
  background: #fff; transition: all .26s; margin-bottom: 12px;
}
.course-item:hover { border-color: rgba(184, 148, 95, .55); transform: translateX(4px); }
.course-item__no {
  font-family: var(--serif); font-size: 12px; font-weight: 700;
  color: var(--gold); letter-spacing: 1.5px; flex-shrink: 0; width: 32px;
}
.course-item__name { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.course-item__tag {
  margin-left: auto; flex-shrink: 0; font-size: 11.5px;
  padding: 4px 11px; border-radius: 100px;
  background: var(--gold-soft); color: var(--gold); font-weight: 600; letter-spacing: .5px;
}

/* 会员卡 */
.platinum {
  background: linear-gradient(150deg, #0d1b2a 0%, #1e3450 100%);
  border-radius: 8px; padding: 58px 54px; color: #fff;
  position: relative; overflow: hidden;
}
.platinum::after {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 148, 95, .22) 0%, transparent 68%);
}
.platinum .wrap-in { position: relative; z-index: 2; }
.platinum__price {
  font-size: 52px; font-weight: 700; letter-spacing: -2px; color: #fff; line-height: 1;
}
.platinum__price .cur { font-size: 24px; font-weight: 600; margin-right: 4px; color: var(--gold-2); letter-spacing: 0; }
.platinum__price .per { font-size: 15px; color: #8fa3b8; font-weight: 400; letter-spacing: 0; margin-left: 8px; }
.platinum__list { list-style: none; margin-top: 34px; display: grid; gap: 14px; }
.platinum__list li {
  display: flex; gap: 13px; align-items: flex-start;
  font-size: 14.5px; color: #c3d2e0; line-height: 1.75;
}
.platinum__list li svg { flex-shrink: 0; margin-top: 4px; color: var(--gold-2); }

/* ---------- 团队成员 ---------- */
.person { display: grid; grid-template-columns: 260px 1fr; gap: 46px; align-items: start; }
.person__photo {
  aspect-ratio: 3 / 4; border-radius: 6px; overflow: hidden;
  background: linear-gradient(150deg, #eef2f7 0%, #dde5ee 100%);
  display: grid; place-items: center; border: 1px solid var(--line);
}
.person__photo span {
  font-family: var(--serif); font-size: 62px; font-weight: 700;
  color: #b7c4d3; letter-spacing: 4px;
}
.person__name { font-size: 27px; font-weight: 700; color: var(--ink); letter-spacing: -.5px; }
.person__role { margin-top: 8px; font-size: 14.5px; color: var(--gold); font-weight: 600; letter-spacing: .4px; }
.person__bio { margin-top: 22px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.person__bio p + p { margin-top: 14px; }
.person__tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.tag {
  font-size: 12.5px; padding: 6px 14px; border-radius: 100px;
  background: var(--bg-soft); color: var(--ink-3); border: 1px solid var(--line);
}

/* ---------- 时间线 ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute; left: 5px; top: 8px; bottom: 8px;
  width: 1px; background: linear-gradient(180deg, var(--gold) 0%, var(--line) 88%);
}
.tl-item { position: relative; padding-bottom: 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -32px; top: 7px;
  width: 11px; height: 11px; border-radius: 50%;
  background: #fff; border: 2px solid var(--gold);
}
.tl-item__year {
  font-family: var(--serif); font-size: 13.5px; font-weight: 700;
  color: var(--gold); letter-spacing: 1.6px; margin-bottom: 7px;
}
.tl-item__title { font-size: 16.5px; font-weight: 650; color: var(--ink); }
.tl-item__desc { margin-top: 8px; color: var(--muted); font-size: 14.5px; line-height: 1.85; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-2); letter-spacing: .3px; }
.field label .req { color: #c25a4f; margin-left: 3px; }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 14.5px; color: var(--ink-2);
  padding: 12px 15px; border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; transition: all .2s; width: 100%; outline: none;
}
.field textarea { resize: vertical; min-height: 118px; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--gold); box-shadow: 0 0 0 3px rgba(184, 148, 95, .13);
}
.field input::placeholder, .field textarea::placeholder { color: #a9b6c4; }

.form-note {
  margin-top: 20px; padding: 15px 18px; border-radius: 5px;
  font-size: 13.5px; line-height: 1.7; display: none;
}
.form-note.is-show { display: block; }
.form-note--ok { background: #eef6f0; border: 1px solid #cfe6d6; color: #2f6b3d; }
.form-note--err { background: #fdf2f1; border: 1px solid #f2d3d0; color: #a8412e; }
.form-note--info { background: #eef3fa; border: 1px solid #d3e0f0; color: #1a4d8f; }

/* ---------- 认证模态框 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(13, 27, 42, .55);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; padding: 24px;
}
.modal.is-open { display: flex; animation: fade .22s ease; }
@keyframes fade { from { opacity: 0; } }
.modal__box {
  background: #fff; border-radius: 10px; width: 100%; max-width: 448px;
  box-shadow: var(--shadow-lg); max-height: 92vh; overflow-y: auto;
  position: relative; animation: rise .28s cubic-bezier(.2, .8, .3, 1);
}
@keyframes rise { from { opacity: 0; transform: translateY(18px) scale(.98); } }
.modal__close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px;
  border-radius: 50%; display: grid; place-items: center;
  color: var(--muted); transition: all .2s; z-index: 2;
}
.modal__close:hover { background: var(--bg-soft); color: var(--ink); }
.modal__head { padding: 36px 36px 0; }
.modal__head h3 { font-size: 23px; font-weight: 700; color: var(--ink); letter-spacing: -.4px; }
.modal__head p { margin-top: 9px; font-size: 14px; color: var(--muted); }
.modal__body { padding: 26px 36px 36px; }

.tabs {
  display: flex; gap: 4px; padding: 4px; border-radius: 7px;
  background: var(--bg-soft); margin-bottom: 24px;
}
.tab {
  flex: 1; padding: 9px 6px; border-radius: 5px; font-size: 13.5px;
  font-weight: 600; color: var(--muted); transition: all .22s; text-align: center;
}
.tab.is-active { background: #fff; color: var(--ink); box-shadow: var(--shadow-sm); }
.pane { display: none; }
.pane.is-active { display: block; }

.modal .field + .field { margin-top: 16px; }
.modal .btn { margin-top: 22px; }
.modal__foot {
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line-2);
  font-size: 13px; color: var(--muted); text-align: center; line-height: 1.8;
}
.link {
  color: var(--accent); font-weight: 600; cursor: pointer;
  text-decoration: underline; text-underline-offset: 3px;
}
.link:hover { color: var(--gold); }
.code-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: start; }
.code-row .btn { margin-top: 0; padding: 12px 18px; height: 45px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-deep); color: #8fa3b8; padding: 72px 0 32px; font-size: 14px; }
.footer__grid {
  display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.3fr;
  gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.footer__desc { margin-top: 22px; font-size: 13.5px; line-height: 1.85; color: #7d90a5; max-width: 300px; }
.footer h4 {
  color: #fff; font-size: 13px; font-weight: 600;
  letter-spacing: 1.4px; text-transform: uppercase; margin-bottom: 20px;
}
.footer ul { list-style: none; display: grid; gap: 11px; }
.footer ul a { font-size: 13.5px; color: #8fa3b8; transition: color .2s; }
.footer ul a:hover { color: var(--gold-2); }
.footer__contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; line-height: 1.7; }
.footer__contact svg { flex-shrink: 0; margin-top: 4px; color: var(--gold); }
.footer__bottom {
  padding-top: 26px; display: flex; justify-content: space-between;
  gap: 20px; flex-wrap: wrap; font-size: 12.5px; color: #6b8299;
}

/* ---------- 动效 ---------- */
/* 默认可见：保证 JS 失效 / 未执行时内容不会被永久隐藏（无障碍与 SEO 兜底）。
   仅当脚本成功启动并打上 .js-anim 标记后，才启用"初始隐藏 + 滚动显现"。 */
.reveal { opacity: 1; transform: none; }
.js-anim .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .3, 1);
}
.js-anim .reveal.is-in { opacity: 1; transform: none; }

/* 尊重系统「减少动态效果」设定 */
@media (prefers-reduced-motion: reduce) {
  .js-anim .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

/* ---------- 跨域引导提示（展示域 → 官方域） ---------- */
.xdomain-notice {
  position: fixed; left: 50%; bottom: 34px; z-index: 9999;
  transform: translate(-50%, 14px); opacity: 0;
  transition: opacity .32s ease, transform .32s cubic-bezier(.2, .8, .3, 1);
  pointer-events: none; max-width: calc(100vw - 32px);
}
.xdomain-notice.is-in { opacity: 1; transform: translate(-50%, 0); }
.xdomain-notice__box {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 20px; border-radius: 999px;
  background: rgba(13, 27, 42, .96); color: #f4f6f9;
  font-size: 13.5px; line-height: 1.5; letter-spacing: .2px;
  box-shadow: 0 12px 34px rgba(13, 27, 42, .30);
  backdrop-filter: blur(6px);
}
.xdomain-notice__box svg { flex-shrink: 0; color: #d7b678; }
@media (max-width: 560px) {
  .xdomain-notice { bottom: 20px; }
  .xdomain-notice__box { font-size: 12.5px; padding: 11px 16px; border-radius: 14px; }
}

/* ---------- 铂金会员：扫码申请区 ---------- */
.qr-join {
  display: flex; align-items: center; gap: 16px;
  margin-top: 22px; padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}
/* 二维码为单色图，放在深色卡上需白色衬底 + 留白保证可扫 */
.qr-join__img {
  display: block; flex-shrink: 0;
  width: 108px; height: 108px;
  background: #fff; border-radius: 8px; padding: 7px;
  box-sizing: content-box;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
  /* 二维码必须保持锐利，禁用平滑/像素化缩放 */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}
.qr-join__txt { min-width: 0; }
.qr-join__title {
  font-size: 15px; font-weight: 600; color: #fff;
  letter-spacing: .3px; margin-bottom: 6px;
}
.qr-join__desc {
  font-size: 13px; line-height: 1.6; color: #a8b8c9;
}

@media (max-width: 560px) {
  .qr-join { gap: 14px; }
  .qr-join__img { width: 92px; height: 92px; padding: 6px; }
}

/* ---------- 响应式 ---------- */
.nav__toggle { display: none; width: 38px; height: 38px; border-radius: 5px; place-items: center; color: var(--ink); }
.nav__toggle:hover { background: var(--bg-soft); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .statband { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 880px) {
  .wrap { padding: 0 22px; }
  .section { padding: 74px 0; }
  .nav__inner { height: 84px; gap: 16px; padding: 0 22px; }
  .brand__logo { height: 57px; }
  .brand__logo--footer { height: 66px; }
  .nav__toggle { display: grid; margin-left: auto; }
  .nav__menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0; padding: 8px 22px 18px;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__link { padding: 14px 0; border-bottom: 1px solid var(--line-2); font-size: 15px; }
  .nav__link::after { display: none; }
  .nav__actions .btn span.hide-sm { display: none; }
  .hero { padding: 76px 0 82px; }
  .hero__stats { margin-top: 52px; }
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .person { grid-template-columns: 1fr; gap: 30px; }
  .person__photo { max-width: 220px; }
  .platinum { padding: 40px 28px; }
  .cert-group__sub { margin-left: 0; width: 100%; }
  .form-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 36px; }
}

@media (max-width: 560px) {
  .grid--4 { grid-template-columns: 1fr; }
  .hero__stat b { font-size: 30px; }
  .statband__item b { font-size: 32px; }
  .modal__head, .modal__body { padding-left: 24px; padding-right: 24px; }
  .hero__cta .btn { width: 100%; }
  .brand__logo { height: 47px; }
  .brand__logo--footer { height: 57px; }
}