/* ================================================================
   YSIEG STUDY — Design System
   调色板: 深海蓝(主) + 学术金(强调) + 纯白/浅灰(内容区)
   字体: 系统中文 + Georgia衬线(英文展示标题)
   签名元素: 课程卡片左侧渐变竖线 + 英雄区斜切背景层
   ================================================================ */

:root {
  --navy:        #0B1F3A;
  --navy-mid:    #163156;
  --navy-light:  #1E4A7A;
  --gold:        #C9A84C;
  --gold-light:  #E2BE72;
  --gold-pale:   #FDF6E3;
  --white:       #FFFFFF;
  --off-white:   #F7F9FC;
  --gray-100:    #EEF1F6;
  --gray-200:    #D5DCE8;
  --gray-400:    #8A95AB;
  --gray-600:    #4A5568;
  --gray-800:    #1A202C;
  --teal:        #1A8074;
  --coral:       #C0533A;
  --rose:        #9B3E6E;
  --blue-accent: #2563EB;

  --font-display: Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
  --r-xl: 24px;

  --shadow-sm: 0 1px 4px rgba(11,31,58,.07);
  --shadow-md: 0 4px 16px rgba(11,31,58,.11);
  --shadow-lg: 0 12px 40px rgba(11,31,58,.16);

  --max-w: 1160px;
  --nav-h: 66px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Layout ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.sec { padding: 88px 0; }
.sec--gray { background: var(--off-white); }
.sec--navy { background: var(--navy); color: var(--white); }
.sec--gold { background: var(--gold-pale); }

/* ── Typography ── */
.eyebrow {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.eyebrow--light { color: var(--gold-light); }

.sec-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 400;
  line-height: 1.22;
  color: var(--navy);
  margin-bottom: 14px;
}
.sec-title--white { color: var(--white); }

.sec-sub {
  font-size: 16.5px;
  color: var(--gray-600);
  max-width: 580px;
  margin-bottom: 52px;
  line-height: 1.8;
}
.sec-sub--light { color: rgba(255,255,255,.6); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 12px 28px;
  border-radius: var(--r-md);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s ease;
  white-space: nowrap;
  font-family: var(--font-body);
}
.btn-gold  { background: var(--gold); color: var(--navy); }
.btn-gold:hover  { background: var(--gold-light); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(201,168,76,.35); }
.btn-white { background: var(--white); color: var(--navy); }
.btn-white:hover { background: var(--off-white); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--white); border: 1.5px solid rgba(255,255,255,.4); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-navy  { background: var(--navy); color: var(--white); }
.btn-navy:hover  { background: var(--navy-mid); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-lg { padding: 15px 36px; font-size: 15.5px; }
.btn-full { width: 100%; justify-content: center; }

/* ── Navbar ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(11,31,58,.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(201,168,76,.13);
  z-index: 100;
  transition: box-shadow .3s;
}
.nav.scrolled { box-shadow: 0 2px 30px rgba(0,0,0,.25); }
.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav__logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav__logo-mark {
  width: 36px; height: 36px;
  background: var(--gold);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 18px; font-weight: 700; color: var(--navy);
}
.nav__logo-text { line-height: 1.2; }
.nav__logo-name { font-size: 15px; font-weight: 700; color: var(--white); display: block; }
.nav__logo-sub  { font-size: 11px; color: var(--gray-400); display: block; }

.nav__menu { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav__item { position: relative; }
.nav__item > a {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 13px;
  font-size: 13.5px;
  color: rgba(255,255,255,.78);
  border-radius: var(--r-sm);
  transition: all .15s;
}
.nav__item > a:hover,
.nav__item > a.active { color: var(--white); background: rgba(255,255,255,.07); }
.nav__arrow { font-size: 10px; opacity: .6; transition: transform .2s; }
.nav__item:hover .nav__arrow { transform: rotate(180deg); }

.nav__drop {
  position: absolute;
  top: calc(100% + 6px); left: 50%;
  transform: translateX(-50%);
  background: var(--navy-mid);
  border: 1px solid rgba(201,168,76,.18);
  border-radius: var(--r-md);
  padding: 8px;
  min-width: 176px;
  opacity: 0; visibility: hidden;
  transition: all .18s;
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
}
.nav__item:hover .nav__drop { opacity: 1; visibility: visible; top: calc(100% + 2px); }
.nav__drop a {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: rgba(255,255,255,.72);
  border-radius: var(--r-sm);
}
.nav__drop a:hover { color: var(--white); background: rgba(255,255,255,.08); }
.nav__drop-divider { height: 1px; background: rgba(255,255,255,.07); margin: 5px 0; }

.nav__right { display: flex; align-items: center; gap: 10px; }
.nav__tel { font-size: 13px; color: rgba(255,255,255,.55); }
.nav__tel strong { color: var(--gold-light); }

.nav__burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; border: none; background: none; }
.nav__burger span { display: block; width: 22px; height: 2px; background: var(--white); border-radius: 2px; transition: all .3s; }

/* ── Mobile nav ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--navy-mid);
  border-bottom: 1px solid rgba(201,168,76,.15);
  z-index: 99;
  padding: 12px 20px 20px;
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 11px 4px;
  font-size: 15px;
  color: rgba(255,255,255,.8);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.mobile-nav a.sub { padding-left: 20px; font-size: 14px; color: rgba(255,255,255,.55); }
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--gold); }

/* ── Hero ── */
.hero {
  min-height: 100vh;
  background: var(--navy);
  display: flex; align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}
/* 签名元素：斜切背景 */
.hero::before {
  content: '';
  position: absolute;
  right: -2%; top: 0; bottom: 0;
  width: 52%;
  background: var(--navy-mid);
  clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}
.hero__dots {
  position: absolute;
  right: 4%; top: 15%; bottom: 10%;
  width: 42%;
  opacity: .45;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(201,168,76,.18) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
}
.hero__inner {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
}
.hero__tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(201,168,76,.1);
  border: 1px solid rgba(201,168,76,.28);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 12.5px; color: var(--gold-light);
  margin-bottom: 22px;
}
.hero__tag-dot { width: 6px; height: 6px; background: var(--gold); border-radius: 50%; flex-shrink: 0; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.5vw, 54px);
  font-weight: 400;
  line-height: 1.14;
  color: var(--white);
  margin-bottom: 10px;
}
.hero__title em { font-style: normal; color: var(--gold); }
.hero__title .en { display: block; font-size: .52em; color: rgba(255,255,255,.35); letter-spacing: .04em; margin-top: 6px; }

.hero__desc {
  font-size: clamp(14px, 1.8vw, 17px);
  color: rgba(255,255,255,.6);
  margin: 18px 0 36px;
  max-width: 460px;
  line-height: 1.85;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero__stats {
  display: flex; gap: 36px;
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,.09);
}
.hero__stat-n { font-family: var(--font-display); font-size: 30px; color: var(--gold); line-height: 1; }
.hero__stat-l { font-size: 12.5px; color: rgba(255,255,255,.45); margin-top: 5px; }

/* 英雄区右侧表单卡 */
.hero__card {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: 36px;
  box-shadow: 0 24px 72px rgba(0,0,0,.32);
  position: relative; z-index: 2;
}
.hero__card h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.hero__card p  { font-size: 13.5px; color: var(--gray-600); margin-bottom: 22px; }
.card-badge {
  position: absolute; top: -12px; right: 24px;
  background: var(--gold); color: var(--navy);
  font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 100px;
}

/* ── Form ── */
.fg { margin-bottom: 14px; }
.fg label { display: block; font-size: 12.5px; font-weight: 600; color: var(--gray-600); margin-bottom: 5px; }
.fg input, .fg select, .fg textarea {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--r-md);
  font-size: 14px; font-family: var(--font-body);
  color: var(--gray-800); background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}
.fg input:focus, .fg select:focus, .fg textarea:focus {
  outline: none; border-color: var(--navy-light);
  box-shadow: 0 0 0 3px rgba(30,74,122,.1);
}
.fg textarea { resize: vertical; min-height: 72px; }
.form-note { font-size: 12px; color: var(--gray-400); text-align: center; margin-top: 10px; }
.form-success { display: none; text-align: center; padding: 20px 0; }
.form-success .ico { font-size: 44px; margin-bottom: 10px; }
.form-success h4 { font-size: 17px; color: var(--navy); margin-bottom: 6px; }
.form-success p  { font-size: 14px; color: var(--gray-600); }

/* ── 课程卡片 ── */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.c-card {
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: all .25s ease;
}
.c-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }

/* 签名元素：左侧竖线色条 */
.c-card__top {
  padding: 26px 22px 18px 26px;
  border-left: 4px solid var(--gold);
}
.c-card__top--teal  { border-left-color: var(--teal); }
.c-card__top--coral { border-left-color: var(--coral); }
.c-card__top--rose  { border-left-color: var(--rose); }
.c-card__top--blue  { border-left-color: var(--blue-accent); }
.c-card__top--navy  { border-left-color: var(--navy-light); }

.c-card__cat {
  font-size: 11px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--gold);
  margin-bottom: 7px; display: block;
}
.c-card__cat--teal  { color: var(--teal); }
.c-card__cat--coral { color: var(--coral); }
.c-card__cat--rose  { color: var(--rose); }
.c-card__cat--blue  { color: var(--blue-accent); }
.c-card__cat--navy  { color: var(--navy-light); }

.c-card__title {
  font-family: var(--font-display);
  font-size: 20px; font-weight: 400;
  color: var(--navy); line-height: 1.3; margin-bottom: 8px;
}
.c-card__desc { font-size: 13.5px; color: var(--gray-600); line-height: 1.7; }

.c-card__body { padding: 4px 22px 18px; flex: 1; }
.c-card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 10px; }
.tag {
  font-size: 12px; padding: 3px 10px;
  border-radius: 100px;
  background: var(--gray-100); color: var(--gray-600);
}

.c-card__footer {
  padding: 14px 22px;
  border-top: 1px solid var(--gray-100);
  display: flex; align-items: center; justify-content: space-between;
}
.c-card__arrow {
  font-size: 13.5px; font-weight: 600; color: var(--navy);
  display: flex; align-items: center; gap: 5px; transition: gap .15s;
}
.c-card:hover .c-card__arrow { gap: 10px; color: var(--navy-light); }

/* ── 资讯卡片 ── */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.n-card {
  background: var(--white);
  border-radius: var(--r-lg); border: 1px solid var(--gray-100);
  overflow: hidden; display: flex; flex-direction: column;
  transition: all .22s;
}
.n-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.n-card__body { padding: 22px 22px 14px; flex: 1; }
.n-cat {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .09em; padding: 4px 10px; border-radius: 100px;
  margin-bottom: 11px;
}
.n-cat--policy { background: rgba(26,128,116,.09); color: var(--teal); }
.n-cat--exam   { background: rgba(201,168,76,.1);  color: #8a6a1a; }
.n-cat--camp   { background: rgba(192,83,58,.09);  color: var(--coral); }
.n-cat--guide  { background: rgba(155,62,110,.09); color: var(--rose); }
.n-card__title {
  font-size: 16.5px; font-weight: 600; color: var(--navy);
  line-height: 1.42; margin-bottom: 9px;
}
.n-card__excerpt {
  font-size: 13.5px; color: var(--gray-600); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 3;
  -webkit-box-orient: vertical; overflow: hidden;
}
.n-card__foot {
  padding: 12px 22px;
  border-top: 1px solid var(--gray-100);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12.5px; color: var(--gray-400);
}
.n-card__read {
  font-size: 13px; font-weight: 600; color: var(--navy);
  display: flex; align-items: center; gap: 4px; transition: gap .15s;
}
.n-card__read:hover { gap: 8px; }

/* ── 步骤 ── */
.steps-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px; position: relative;
}
.steps-row::before {
  content: ''; position: absolute; top: 28px; left: 10%; right: 10%;
  height: 1px; background: var(--gray-200);
}
.step { text-align: center; padding: 0 12px; position: relative; z-index: 1; }
.step__n {
  width: 56px; height: 56px; margin: 0 auto 14px;
  background: var(--white); border: 2px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 20px; color: var(--navy);
}
.step__t { font-size: 15px; font-weight: 600; color: var(--navy); margin-bottom: 5px; }
.step__d { font-size: 13px; color: var(--gray-600); }

/* ── 联系/二维码横条 ── */
.contact-bar { background: var(--navy); padding: 56px 0; }
.contact-bar__inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 40px; flex-wrap: wrap;
}
.contact-bar__copy h2 {
  font-family: var(--font-display); font-size: 27px; font-weight: 400;
  color: var(--white); margin-bottom: 7px;
}
.contact-bar__copy p { font-size: 15px; color: rgba(255,255,255,.55); }

.qr-block {
  display: flex; align-items: center; gap: 18px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(201,168,76,.2);
  border-radius: var(--r-lg);
  padding: 18px 26px;
}
.qr-box {
  width: 76px; height: 76px; background: var(--white);
  border-radius: var(--r-md); display: flex; align-items: center;
  justify-content: center; flex-shrink: 0; padding: 6px;
}
.qr-info strong { display: block; font-size: 14.5px; color: var(--white); margin-bottom: 3px; }
.qr-info span   { font-size: 13px; color: rgba(255,255,255,.5); }

/* ── 弹窗 ── */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,.52);
  z-index: 200; display: flex; align-items: center; justify-content: center;
  padding: 20px; opacity: 0; visibility: hidden; transition: all .22s;
}
.modal-bg.open { opacity: 1; visibility: visible; }
.modal {
  background: var(--white); border-radius: var(--r-xl); padding: 40px;
  max-width: 460px; width: 100%; position: relative;
  transform: translateY(20px); transition: transform .22s;
}
.modal-bg.open .modal { transform: translateY(0); }
.modal__x {
  position: absolute; top: 14px; right: 14px;
  width: 30px; height: 30px; border: none; background: var(--gray-100);
  border-radius: 50%; cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600); transition: background .15s;
}
.modal__x:hover { background: var(--gray-200); }
.modal h3 { font-family: var(--font-display); font-size: 22px; color: var(--navy); margin-bottom: 5px; }
.modal > p { font-size: 13.5px; color: var(--gray-600); margin-bottom: 22px; }

/* ── 浮动按钮 ── */
.float-bar {
  position: fixed; right: 20px; bottom: 28px; z-index: 98;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.float-btn {
  width: 50px; height: 50px; border-radius: 50%; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  background: var(--gold); color: var(--navy);
  box-shadow: 0 4px 18px rgba(201,168,76,.38); transition: all .2s;
}
.float-btn:hover { transform: scale(1.1); box-shadow: 0 6px 26px rgba(201,168,76,.5); }
.float-label {
  font-size: 10.5px; font-weight: 700; color: var(--navy);
  background: var(--gold); padding: 2px 9px; border-radius: 100px; white-space: nowrap;
}

/* ── 页脚 ── */
.footer { background: var(--gray-800); padding: 60px 0 32px; }
.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px;
}
.footer__brand-name { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.footer__brand-desc { font-size: 13.5px; color: rgba(255,255,255,.45); line-height: 1.8; }
.footer__col h4 {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--white); margin-bottom: 16px;
}
.footer__col ul { list-style: none; }
.footer__col li { margin-bottom: 9px; }
.footer__col a { font-size: 13.5px; color: rgba(255,255,255,.5); transition: color .15s; }
.footer__col a:hover { color: var(--gold); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.07); padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12.5px; color: rgba(255,255,255,.3); flex-wrap: wrap; gap: 10px;
}

/* ── 页面英雄(内页) ── */
.page-hero {
  background: var(--navy);
  padding: calc(var(--nav-h) + 56px) 0 60px;
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 40%;
  background: var(--navy-mid);
  clip-path: polygon(15% 0, 100% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}
.page-hero__inner { position: relative; z-index: 1; }
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: rgba(255,255,255,.4); margin-bottom: 14px;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { opacity: .4; }
.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.8vw, 44px); font-weight: 400;
  color: var(--white); margin-bottom: 12px; line-height: 1.2;
}
.page-hero__desc { font-size: 16.5px; color: rgba(255,255,255,.6); max-width: 580px; }

/* ── 特性列表 ── */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 28px; }
.feat { display: flex; gap: 14px; }
.feat__ico {
  width: 42px; height: 42px; border-radius: var(--r-md);
  background: var(--gold-pale); display: flex; align-items: center;
  justify-content: center; font-size: 19px; flex-shrink: 0;
}
.feat__t { font-size: 15.5px; font-weight: 600; color: var(--navy); margin-bottom: 4px; }
.feat__d { font-size: 13.5px; color: var(--gray-600); line-height: 1.65; }

/* ── 资讯过滤栏 ── */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
.f-btn {
  padding: 8px 18px; border-radius: 100px; font-size: 13.5px; font-weight: 500;
  cursor: pointer; border: 1.5px solid var(--gray-200);
  background: var(--white); color: var(--gray-600); transition: all .15s;
  font-family: var(--font-body);
}
.f-btn:hover, .f-btn.active {
  border-color: var(--navy); background: var(--navy); color: var(--white);
}

/* ── 响应式 ── */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__card  { max-width: 480px; }
  .hero::before, .hero__dots { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .steps-row::before { display: none; }
  .contact-bar__inner { flex-direction: column; align-items: flex-start; }
  .nav__menu, .nav__right .nav__tel, .nav__right .btn { display: none; }
  .nav__burger { display: flex; }
  .page-hero::after { display: none; }
}
@media (max-width: 600px) {
  .sec { padding: 60px 0; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__stats  { gap: 20px; flex-wrap: wrap; }
  .float-bar    { right: 14px; bottom: 18px; }
  .modal        { padding: 28px 20px; }
  .hero__card   { padding: 26px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ================================================================
   Light brand theme — Yinsi
   浅色版覆盖层：保留原布局与交互，只调整品牌、首屏、导航和深色区块视觉。
   ================================================================ */

:root {
  --navy:        #08264A;
  --navy-mid:    #EAF1F8;
  --navy-light:  #1B4E7A;
  --gold:        #D8A12A;
  --gold-light:  #E8BC59;
  --gold-pale:   #FFF8E8;
  --white:       #FFFFFF;
  --off-white:   #F8FAFD;
  --gray-100:    #EEF3F8;
  --gray-200:    #DDE6F0;
  --gray-400:    #7D8EA3;
  --gray-600:    #4D6074;
  --gray-800:    #142235;

  --shadow-sm: 0 1px 4px rgba(8,38,74,.06);
  --shadow-md: 0 8px 24px rgba(8,38,74,.10);
  --shadow-lg: 0 18px 48px rgba(8,38,74,.14);
}

body {
  background:
    radial-gradient(circle at 16% 0, rgba(216,161,42,.08), transparent 28%),
    linear-gradient(180deg, #FFFFFF 0%, #F8FAFD 100%);
}

.nav {
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(8,38,74,.09);
  box-shadow: 0 8px 28px rgba(8,38,74,.06);
}
.nav.scrolled { box-shadow: 0 10px 32px rgba(8,38,74,.10); }
.nav__logo { gap: 12px; }
.nav__logo-mark {
  width: 44px;
  height: 44px;
  background: transparent;
  border-radius: 0;
  overflow: visible;
  box-shadow: none;
}
.nav__logo-mark img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}
.nav__logo-name { color: var(--navy); }
.nav__logo-sub { color: var(--gray-600); }
.nav__item > a {
  color: #2D4258;
  font-weight: 600;
}
.nav__item > a:hover,
.nav__item > a.active {
  color: var(--navy);
  background: var(--gold-pale);
}
.nav__drop {
  background: rgba(255,255,255,.98);
  border: 1px solid rgba(8,38,74,.10);
  box-shadow: var(--shadow-lg);
}
.nav__drop a { color: #2D4258; }
.nav__drop a:hover {
  color: var(--navy);
  background: var(--gold-pale);
}
.nav__drop-divider { background: rgba(8,38,74,.08); }
.nav__tel { color: var(--gray-600); }
.nav__tel strong { color: var(--navy); }
.nav__burger span { background: var(--navy); }
.mobile-nav {
  background: rgba(255,255,255,.98);
  border-bottom: 1px solid rgba(8,38,74,.09);
  box-shadow: var(--shadow-md);
}
.mobile-nav a,
.mobile-nav a.sub {
  color: #2D4258;
  border-bottom-color: rgba(8,38,74,.08);
}
.mobile-nav a:hover { color: var(--gold); }

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy);
  box-shadow: 0 8px 20px rgba(216,161,42,.20);
}
.btn-gold:hover {
  background: linear-gradient(135deg, #E0AE3E, #F0C96B);
  box-shadow: 0 12px 26px rgba(216,161,42,.28);
}
.btn-outline {
  background: rgba(255,255,255,.72);
  color: var(--navy);
  border-color: rgba(8,38,74,.18);
}
.btn-outline:hover {
  background: var(--white);
  border-color: var(--gold);
  color: var(--navy);
}
.btn-navy {
  background: var(--navy);
  color: var(--white);
}

.hero {
  min-height: 92vh;
  background:
    linear-gradient(135deg, rgba(255,255,255,.96) 0%, rgba(247,250,253,.96) 50%, rgba(234,241,248,.96) 100%);
}
.hero::before {
  background:
    linear-gradient(135deg, rgba(216,161,42,.13), rgba(8,38,74,.06));
  opacity: 1;
}
.hero__dots {
  opacity: .65;
  background-image:
    radial-gradient(circle, rgba(216,161,42,.18) 1.5px, transparent 1.5px);
}
.hero__tag {
  background: var(--gold-pale);
  border-color: rgba(216,161,42,.32);
  color: #8B6419;
}
.hero__title { color: var(--navy); }
.hero__title em { color: var(--gold); }
.hero__title .en { color: rgba(8,38,74,.30); }
.hero__desc { color: var(--gray-600); }
.hero__stats {
  border-top-color: rgba(8,38,74,.10);
}
.hero__stat-l { color: var(--gray-600); }
.hero__card {
  border: 1px solid rgba(8,38,74,.08);
  box-shadow: 0 24px 72px rgba(8,38,74,.13);
}
.card-badge {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
}

.sec--navy,
.contact-bar {
  background:
    linear-gradient(135deg, #F7FAFD 0%, #EDF4FA 100%);
  color: var(--navy);
}
.sec-title--white,
.contact-bar__copy h2 {
  color: var(--navy);
}
.sec-sub--light,
.contact-bar__copy p {
  color: var(--gray-600);
}
.contact-bar {
  border-top: 1px solid rgba(8,38,74,.08);
  border-bottom: 1px solid rgba(8,38,74,.08);
}
.qr-block {
  background: var(--white);
  border-color: rgba(8,38,74,.10);
  box-shadow: var(--shadow-md);
}
.qr-info strong { color: var(--navy); }
.qr-info span { color: var(--gray-600); }

.footer {
  background: #F4F7FB;
  border-top: 1px solid rgba(8,38,74,.08);
}
.footer__brand-name,
.footer__col h4 {
  color: var(--navy);
}
.footer__brand-desc,
.footer__col a,
.footer__bottom {
  color: var(--gray-600);
}
.footer__col a:hover { color: var(--gold); }
.footer__bottom {
  border-top-color: rgba(8,38,74,.08);
}

.page-hero {
  background:
    linear-gradient(135deg, #FFFFFF 0%, #F6F9FC 48%, #EAF1F8 100%) !important;
  border-bottom: 1px solid rgba(8,38,74,.08);
}
.page-hero::after {
  background:
    linear-gradient(135deg, rgba(216,161,42,.12), rgba(8,38,74,.04));
}
.breadcrumb { color: var(--gray-600); }
.breadcrumb a:hover { color: var(--gold); }
.page-hero__title { color: var(--navy); }
.page-hero__desc { color: var(--gray-600); }

.f-btn:hover,
.f-btn.active {
  border-color: var(--gold);
  background: var(--gold-pale);
  color: var(--navy);
}

@media (max-width: 960px) {
  .hero {
    min-height: auto;
  }
}