/**
 * Shanghai Shipping Exchange — About us section (new design)
 * Scope: body.sse-brief only — does not modify legacy allen.css / brief.css
 */

@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/dm-sans-regular.ttf") format("truetype");
}

@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/dm-sans-medium.ttf") format("truetype");
}

@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/dm-sans-semibold.ttf") format("truetype");
}

@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/dm-sans-bold.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/instrument-serif-regular.ttf") format("truetype");
}

:root {
  --sse-navy: #0b1f3a;
  --sse-navy-mid: #12325c;
  --sse-ocean: #1a5f8a;
  --sse-teal: #2a8f8f;
  --sse-gold: #c4a052;
  --sse-gold-soft: #e8d5a3;
  --sse-bg: #eef3f8;
  --sse-surface: #ffffff;
  --sse-surface-alt: #f7fafc;
  --sse-border: #d4dee8;
  --sse-text: #1a2d42;
  --sse-text-muted: #5c7086;
  --sse-link: #1a5f8a;
  --sse-link-hover: #0e4568;
  --sse-radius: 6px;
  --sse-shadow: 0 2px 12px rgba(11, 31, 58, 0.08);
  --sse-shadow-lg: 0 8px 28px rgba(11, 31, 58, 0.12);
  --sse-font: "DM Sans", "Segoe UI", system-ui, sans-serif;
  --sse-serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sse-width: 1200px;
  --sse-sidebar-width: 248px;
  --sse-main-gap: 16px;
}

/* ── Base ── */
body.sse-brief {
  width: var(--sse-width);
  max-width: 100%;
  margin: 0 auto;
  padding: 0 0 24px;
  box-sizing: border-box;
  font: 13px/1.65 var(--sse-font);
  color: var(--sse-text);
  background: var(--sse-bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(26, 95, 138, 0.14), transparent 55%),
    linear-gradient(180deg, #e4edf5 0%, var(--sse-bg) 120px);
  text-align: left;
  -webkit-font-smoothing: antialiased;
}

body.sse-brief::after {
  content: "";
  display: table;
  clear: both;
  width: 100%;
}

body.sse-brief a:link,
body.sse-brief a:visited {
  color: var(--sse-link);
  text-decoration: none;
  transition: color 0.15s ease;
}

body.sse-brief a:hover {
  color: var(--sse-link-hover);
  text-decoration: underline;
}

body.sse-brief p {
  margin: 0 0 0.75em;
}

/* ── Header banner ── */
body.sse-brief #logo {
  width: 100%;
  min-height: 180px;
  background: linear-gradient(135deg, var(--sse-navy) 0%, var(--sse-navy-mid) 42%, var(--sse-ocean) 100%);
  box-shadow: var(--sse-shadow-lg);
  position: relative;
  overflow: hidden;
}

body.sse-brief #logo::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0%, rgba(196, 160, 82, 0.06) 50%, transparent 100%),
    repeating-linear-gradient(
      -55deg,
      transparent,
      transparent 18px,
      rgba(255, 255, 255, 0.025) 18px,
      rgba(255, 255, 255, 0.025) 19px
    );
  pointer-events: none;
}

body.sse-brief .sse-brief-banner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 160px;
  padding: 36px 40px 32px;
  box-sizing: border-box;
}

body.sse-brief .sse-brief-banner__title {
  margin: 0;
  font-family: var(--sse-serif);
  font-size: 42px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

body.sse-brief .sse-brief-banner__subtitle {
  margin: 10px 0 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sse-gold-soft);
}

/* ── Top navigation ── */
body.sse-brief #menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 0;
  min-height: 44px;
  padding: 8px 14px;
  box-sizing: border-box;
  background: linear-gradient(180deg, var(--sse-navy-mid) 0%, var(--sse-navy) 100%);
  border-bottom: 3px solid var(--sse-gold);
  box-shadow: var(--sse-shadow);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

body.sse-brief #menu.whitezi,
body.sse-brief #menu a {
  color: #f0f4f8 !important;
}

body.sse-brief #menu a {
  padding: 6px 14px;
  border-radius: 4px;
  line-height: 1.4;
  text-decoration: none !important;
  transition: background 0.15s ease, color 0.15s ease;
}

body.sse-brief #menu a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--sse-gold-soft) !important;
  text-decoration: none !important;
}

body.sse-brief #menu .sse-menu-logo {
  padding: 0;
}

body.sse-brief #menu .sse-menu-logo:hover {
  background: transparent;
}

body.sse-brief #menu .sse-menu-logo img {
  vertical-align: middle;
  border-radius: 3px;
  transition: opacity 0.15s ease;
}

body.sse-brief #menu .sse-menu-logo:hover img {
  opacity: 0.88;
}

/* ── Main: sidebar + content ── */
body.sse-brief .sse-brief-main {
  display: flex;
  align-items: flex-start;
  gap: var(--sse-main-gap);
  width: 100%;
  margin-top: var(--sse-main-gap);
  clear: both;
}

/* ── Sidebar ── */
body.sse-brief .left230.secondmenu {
  flex: 0 0 var(--sse-sidebar-width);
  width: var(--sse-sidebar-width);
  margin: 0;
  padding: 0;
  float: none;
  height: auto;
  background: var(--sse-surface);
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
  box-shadow: var(--sse-shadow);
  overflow: hidden;
}

body.sse-brief .left230.secondmenu h4 {
  margin: 0;
  padding: 14px 16px;
  font-family: var(--sse-serif);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: #fff;
  text-align: center;
  background: linear-gradient(90deg, var(--sse-navy-mid), var(--sse-ocean));
  border-bottom: 2px solid var(--sse-gold);
}

body.sse-brief .left230.secondmenu .nav {
  margin: 0;
  padding: 8px 0 12px;
  list-style: none;
}

body.sse-brief .left230.secondmenu .nav > li {
  margin: 0;
  padding: 0;
  line-height: 1.4;
  font-size: 13px;
}

body.sse-brief .left230.secondmenu .nav > li:not(:has(a)) {
  padding: 10px 16px 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sse-text-muted);
}

body.sse-brief .left230.secondmenu .nav > li:has(a) {
  padding: 0;
}

body.sse-brief .left230.secondmenu .nav > li a {
  display: block;
  padding: 9px 16px 9px 28px;
  color: var(--sse-text);
  text-decoration: none !important;
  border-left: 3px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='6' viewBox='0 0 6 6'%3E%3Ccircle cx='3' cy='3' r='2' fill='%231a5f8a'/%3E%3C/svg%3E") no-repeat 14px 14px;
}

body.sse-brief .left230.secondmenu .nav > li a:hover {
  background-color: var(--sse-surface-alt);
  color: var(--sse-ocean);
  text-decoration: none !important;
}

body.sse-brief .left230.secondmenu .nav > li.active a {
  font-weight: 600;
  color: var(--sse-navy);
  background-color: rgba(26, 95, 138, 0.08);
  border-left-color: var(--sse-gold);
}

body.sse-brief .left230.secondmenu .nav .icon-chevron-right {
  display: none;
}

/* ── Main content panel ── */
body.sse-brief .mdir15.introb {
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 28px 36px 32px;
  float: none;
  width: auto;
  overflow: hidden;
  box-sizing: border-box;
  background: var(--sse-surface);
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
  box-shadow: var(--sse-shadow);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 12px;
  align-content: start;
}

body.sse-brief .mdir15.introb > p {
  grid-column: 1 / -1;
  margin: 0;
}

body.sse-brief .mdir15.introb > p:first-child {
  font-family: var(--sse-serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--sse-navy);
  letter-spacing: 0.02em;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--sse-gold);
  margin-bottom: 4px;
}

body.sse-brief .mdir15.introb > p:first-child + p {
  display: none;
}

body.sse-brief .intrott {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding: 20px 4px 0;
  border-top: 1px solid var(--sse-border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sse-text);
  text-align: left;
}

body.sse-brief .intrott p {
  text-align: justify;
}

body.sse-brief .intrott strong {
  color: var(--sse-navy);
  font-weight: 600;
}

body.sse-brief .intrott img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 8px auto;
  border-radius: var(--sse-radius);
  box-shadow: var(--sse-shadow);
}

/* Structure page */
body.sse-brief .mdir15.introb.sse-structure-page,
body.sse-brief .mdir15.introb:not(.briefright):not(.sse-structure-page) {
  display: block;
  padding: 28px 36px 32px;
  text-align: left;
}

body.sse-brief .mdir15.introb:not(.briefright):not(.sse-structure-page) iframe {
  display: block;
  max-width: 100%;
  margin: 0 auto;
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
  background: #fff;
}

/* ── Industry Administration sub-tabs ── */
body.sse-brief .btt {
  grid-column: span 1;
  margin: 12px 0 0;
  padding: 14px 10px;
  float: none;
  width: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  box-sizing: border-box;
  font-size: 12px;
  line-height: 1.45;
  font-weight: 500;
  text-align: center;
  color: var(--sse-text);
  background: var(--sse-surface-alt);
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

body.sse-brief .btt a {
  color: var(--sse-link);
  text-decoration: none !important;
}

body.sse-brief .btt a:hover {
  color: var(--sse-link-hover);
  text-decoration: underline !important;
}

body.sse-brief .btt.on01 {
  color: #fff;
  background: linear-gradient(135deg, #6b9e2e 0%, #8bc34a 100%);
  border-color: #5a8a24;
  box-shadow: var(--sse-shadow);
}

body.sse-brief .btt.on02 {
  color: #fff;
  background: linear-gradient(135deg, var(--sse-ocean) 0%, #4db8e8 100%);
  border-color: #1578a8;
  box-shadow: var(--sse-shadow);
}

body.sse-brief .btt.on03 {
  color: var(--sse-navy);
  background: linear-gradient(135deg, #b8eef5 0%, #d4f5fa 100%);
  border-color: #7ec8d4;
  box-shadow: var(--sse-shadow);
}

/* ── Contact us page ── */
body.sse-brief.sse-brief--contact,
body.sse-brief.sse-brief--copyright {
  display: block;
  padding-bottom: 24px;
}

body.sse-brief .sse-brief-contact-panel,
body.sse-brief .sse-brief-copyright-panel {
  flex: 1;
  min-width: 0;
  padding: 28px 36px 32px;
  box-sizing: border-box;
  background: var(--sse-surface);
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
  box-shadow: var(--sse-shadow);
}

body.sse-brief .sse-brief-contact-panel__title,
body.sse-brief .sse-brief-copyright-panel__title {
  margin: 0 0 24px;
  padding-bottom: 12px;
  font-family: var(--sse-serif);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--sse-navy);
  letter-spacing: 0.02em;
  border-bottom: 2px solid var(--sse-gold);
}

body.sse-brief .sse-brief-contact-block {
  margin: 0 0 16px;
}

body.sse-brief .sse-brief-contact-block:last-child {
  margin-bottom: 0;
}

body.sse-brief .tittt {
  margin: 0 0 20px;
  font-family: var(--sse-serif);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--sse-navy);
  text-align: center;
}

body.sse-brief .partnertt1,
body.sse-brief .partnertt2,
body.sse-brief .sse-brief-contact-block > .partnertt1,
body.sse-brief .sse-brief-contact-block > .partnertt2 {
  margin: 0;
  padding: 12px 20px;
  font-family: var(--sse-font);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(90deg, var(--sse-navy-mid), var(--sse-ocean));
  border: 1px solid var(--sse-border);
  border-bottom: none;
  border-radius: var(--sse-radius) var(--sse-radius) 0 0;
}

body.sse-brief .partnertt2,
body.sse-brief .sse-brief-contact-block > .partnertt2 {
  line-height: 1.45;
}

body.sse-brief .partnerttmin,
body.sse-brief .partnertt02,
body.sse-brief .partnertt03,
body.sse-brief .partnertt04,
body.sse-brief .partnertt05,
body.sse-brief .sse-brief-contact-block > .partnerttmin,
body.sse-brief .sse-brief-contact-block > .partnertt02,
body.sse-brief .sse-brief-contact-block > .partnertt03,
body.sse-brief .sse-brief-contact-block > .partnertt04,
body.sse-brief .sse-brief-contact-block > .partnertt05 {
  margin: 0;
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--sse-text);
  background: var(--sse-surface-alt);
  border: 1px solid var(--sse-border);
  border-top: none;
  border-radius: 0 0 var(--sse-radius) var(--sse-radius);
}

body.sse-brief .sse-brief-contact-block p:last-child {
  margin-bottom: 0;
}

body.sse-brief .partnertt02 h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--sse-ocean);
}

body.sse-brief .partnertt02 h3:not(:first-child) {
  margin-top: 16px;
}

/* ── Copyright page ── */
body.sse-brief .sse-brief-copyright-body {
  margin: 0 0 24px;
  padding: 20px 24px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--sse-text);
  text-align: justify;
  background: var(--sse-surface-alt);
  border: 1px solid var(--sse-border);
  border-radius: var(--sse-radius);
}

body.sse-brief .sse-brief-copyright-body p {
  margin: 0 0 1em;
}

body.sse-brief .sse-brief-copyright-body p:last-child {
  margin-bottom: 0;
}

body.sse-brief .sse-brief-copyright-panel .sse-brief-contact-block {
  margin-bottom: 0;
}

body.sse-brief .sse-brief-standalone {
  width: 100%;
  margin-top: var(--sse-main-gap);
}

body.sse-brief .sse-brief-standalone .sse-brief-contact-panel,
body.sse-brief .sse-brief-standalone .sse-brief-copyright-panel {
  width: 100%;
}