/* ===== XinRu Chen — pianist & music scholar ===== */
:root {
  --black: #0e0f10;
  --panel: #16181a;
  --green-deep: #103328;
  --green: #1e6b4f;
  --ivory: #f5f1e6;
  --mist: #b9bdb6;
  --gold: #c8a24a;
  --gold-deep: #9a6b00;
  --line: rgba(245, 241, 230, 0.14);
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Jost', 'Helvetica Neue', Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--ivory);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 26px; }
.narrow { max-width: 780px; margin: 0 auto; padding: 0 26px; }

/* ===== Header ===== */
header.site {
  position: sticky; top: 0; z-index: 80;
  background: rgba(14, 15, 16, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1240px; margin: 0 auto; padding: 16px 26px; gap: 18px;
}
.brand { font-family: var(--serif); font-size: 22px; font-weight: 600; letter-spacing: 0.04em; }
.brand span { color: var(--gold); }
nav.menu { display: flex; gap: 26px; flex-wrap: wrap; }
nav.menu a {
  font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--mist); padding: 4px 0;
  border-bottom: 1.5px solid transparent; transition: 0.18s;
}
nav.menu a:hover, nav.menu a.on { color: var(--ivory); border-bottom-color: var(--gold); }
@media (max-width: 720px) {
  .nav { flex-direction: column; gap: 10px; }
  nav.menu { gap: 16px; justify-content: center; }
}

/* ===== Type & shared ===== */
.kicker {
  font-size: 11.5px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--gold); font-weight: 500;
}
h1.display {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(44px, 7.5vw, 84px); line-height: 1.02; letter-spacing: 0.01em;
}
.hrule { width: 84px; height: 1px; background: var(--gold); opacity: 0.8; margin: 26px 0; }
.hrule.center { margin-left: auto; margin-right: auto; }
section { padding: 84px 0; }
.eyebrow { text-align: center; margin-bottom: 12px; }
.sec-title {
  text-align: center; font-family: var(--serif); font-weight: 600;
  font-size: clamp(30px, 4.5vw, 44px); margin-bottom: 40px;
}
.prose p { margin-bottom: 18px; color: var(--mist); font-size: 16px; }
.prose p strong { color: var(--ivory); font-weight: 400; }

/* buttons */
.btn {
  display: inline-block; font-family: var(--sans); font-weight: 500;
  font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 13px 30px; border-radius: 30px; transition: 0.2s;
  background: var(--gold); color: #241d08; border: 1.5px solid var(--gold);
}
.btn:hover { background: var(--gold-deep); border-color: var(--gold-deep); color: #fff; }
.btn.ghost { background: transparent; color: var(--ivory); border-color: rgba(245, 241, 230, 0.4); }
.btn.ghost:hover { background: var(--ivory); color: var(--black); border-color: var(--ivory); }

/* ===== Home hero ===== */
.hero { padding: 96px 0 90px; }
.hero .cols {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: 60px; align-items: center;
}
@media (max-width: 860px) { .hero .cols { grid-template-columns: 1fr; gap: 44px; } }
.hero .credentials { margin-top: 14px; color: var(--mist); font-size: 15px; letter-spacing: 0.14em; }
.hero blockquote {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(19px, 2.4vw, 24px); line-height: 1.5; color: var(--ivory);
  border-left: 2px solid var(--gold); padding-left: 22px; margin: 30px 0 0;
}
.hero blockquote cite {
  display: block; margin-top: 10px; font-family: var(--sans); font-style: normal;
  font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold);
}
.hero .cta { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }
.portrait { position: relative; }
.portrait img {
  width: 100%; border-radius: 4px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.9);
}
.portrait::before {
  content: ""; position: absolute; inset: 18px -18px -18px 18px;
  border: 1px solid var(--green); border-radius: 4px; z-index: -1;
}
.portrait::after {
  content: ""; position: absolute; top: -14px; left: -14px;
  width: 74px; height: 74px;
  border-top: 2px solid var(--gold); border-left: 2px solid var(--gold);
  border-radius: 4px 0 0 0;
}

/* ===== Dark-green band (touch of 墨绿) ===== */
.band { background: var(--green-deep); }
.band .prose p { color: #cfe0d6; }

/* ===== Education & Awards ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; } }
.split h3 {
  font-family: var(--serif); font-size: 27px; font-weight: 600;
  margin-bottom: 22px; color: var(--ivory);
}
.edu { list-style: none; }
.edu li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.edu .years { font-size: 12px; letter-spacing: 0.18em; color: var(--gold); text-transform: uppercase; }
.edu .deg { font-family: var(--serif); font-size: 21px; margin-top: 2px; }
.edu .inst { color: var(--mist); font-size: 14px; }
.awards { list-style: none; }
.awards li {
  padding: 10px 0 10px 26px; position: relative;
  color: var(--mist); font-size: 14.5px; border-bottom: 1px solid var(--line);
}
.awards li::before { content: "◆"; position: absolute; left: 2px; top: 10px; color: var(--gold); font-size: 9px; }

/* ===== Performance listings ===== */
.year-h {
  font-family: var(--serif); font-size: clamp(34px, 5vw, 52px); font-weight: 600;
  color: var(--gold); margin: 56px 0 6px;
}
.year-h:first-child { margin-top: 0; }
.perf { list-style: none; }
.perf li {
  display: grid; grid-template-columns: 150px 1fr 1.1fr; gap: 20px;
  padding: 20px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
@media (max-width: 760px) { .perf li { grid-template-columns: 1fr; gap: 4px; } }
.perf .date { font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.perf .venue { font-family: var(--serif); font-size: 20px; color: var(--ivory); line-height: 1.3; }
.perf .venue small { display: block; font-family: var(--sans); font-size: 13px; color: var(--mist); margin-top: 2px; }
.perf .prog { color: var(--mist); font-size: 14.5px; }
.perf .prog em { color: #d9c894; font-style: italic; }

/* ===== Teaching achievements ===== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 44px; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line); border-radius: 14px;
  text-align: center; padding: 30px 16px 26px;
  transition: 0.2s;
}
.stat:hover { border-color: rgba(200, 162, 74, 0.5); }
.stat .num {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(36px, 4.5vw, 50px); line-height: 1; color: var(--gold);
}
.stat .lbl { margin-top: 10px; color: var(--mist); font-size: 13px; letter-spacing: 0.04em; line-height: 1.5; }
.ach-list { max-width: 680px; margin: 0 auto; }

/* testimonials */
.testi-title {
  text-align: center; font-family: var(--serif); font-weight: 600;
  font-size: clamp(24px, 3.4vw, 32px); margin: 64px 0 30px;
}
.testis { columns: 2; column-gap: 24px; }
@media (max-width: 760px) { .testis { columns: 1; } }
.testi {
  break-inside: avoid; margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 26px 22px;
}
.testi .stars { color: var(--gold); font-size: 14px; letter-spacing: 4px; }
.testi p {
  margin: 12px 0 14px; color: var(--mist);
  font-size: 14.5px; line-height: 1.75;
}
.testi .who {
  font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); font-weight: 600;
}
.testi .who small {
  display: inline; text-transform: none; letter-spacing: 0.04em;
  color: var(--mist); font-weight: 400; margin-left: 8px;
}

/* ===== Reprogramme cards ===== */
.repro { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
@media (max-width: 760px) { .repro { grid-template-columns: 1fr; } }
.rcard {
  background: linear-gradient(160deg, rgba(16, 51, 40, 0.65), rgba(16, 51, 40, 0.25));
  border: 1px solid rgba(30, 107, 79, 0.45);
  border-radius: 14px; padding: 32px 30px;
  display: flex; flex-direction: column;
  transition: 0.22s;
}
.rcard:hover { border-color: var(--gold); transform: translateY(-3px); }
.rcard .thumb {
  width: calc(100% + 60px); margin: -32px -30px 22px;
  aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: 14px 14px 0 0;
  border-bottom: 1px solid rgba(200, 162, 74, 0.35);
}
.rcard .op { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
.rcard h3 { font-family: var(--serif); font-size: 28px; font-weight: 600; margin: 6px 0 2px; }
.rcard .pieces { color: #cfe0d6; font-size: 13.5px; margin-bottom: 14px; }
.rcard p { color: var(--mist); font-size: 14.5px; flex: 1; }
.rcard .concept {
  margin: 16px 0 20px; padding: 14px 18px;
  border-left: 2px solid var(--gold);
  font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--ivory);
  background: rgba(200, 162, 74, 0.07);
}
.rcard .btn { align-self: flex-start; }
.rcard.coming {
  grid-column: 1 / -1;
  border-style: dashed; border-color: rgba(200, 162, 74, 0.5);
  background: rgba(200, 162, 74, 0.045);
  flex-direction: row; align-items: center; gap: 30px; min-height: 0;
}
.rcard.coming .ctext { flex: 1; }
.rcard.coming p { margin-top: 6px; }
.rcard.coming .btn { flex: none; }
@media (max-width: 720px) {
  .rcard.coming { flex-direction: column; align-items: flex-start; gap: 0; }
  .rcard.coming .btn { margin-top: 18px; }
}

/* ===== Method levels ===== */
.repro.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .repro.cols-3 { grid-template-columns: 1fr; } }
.rcard .lvl-range {
  font-family: var(--serif); font-style: italic;
  color: #d9c894; font-size: 16px; margin-bottom: 12px;
}

/* ===== Page hero (inner pages) ===== */
.page-hero { text-align: center; padding: 84px 26px 64px; border-bottom: 1px solid var(--line); }
.page-hero h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(38px, 6vw, 64px); line-height: 1.18;
}
.page-hero p { max-width: 620px; margin: 16px auto 0; color: var(--mist); font-size: 16px; }

/* ===== CTA panel ===== */
.cta-panel {
  background: var(--green-deep);
  border: 1px solid rgba(200, 162, 74, 0.35);
  border-radius: 16px;
  text-align: center; padding: 54px 34px;
}
.cta-panel h2 { font-family: var(--serif); font-size: clamp(26px, 3.6vw, 38px); font-weight: 600; }
.cta-panel p { color: #cfe0d6; max-width: 540px; margin: 12px auto 0; font-size: 15.5px; }
.cta-panel .cta { margin-top: 28px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--black), #0c1f18);
  padding: 44px 0 52px; text-align: center;
}
footer .fname { font-family: var(--serif); font-size: 20px; letter-spacing: 0.06em; }
footer .fname span { color: var(--gold); }
footer .flinks { margin-top: 14px; display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }
footer .flinks a {
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mist);
  transition: 0.18s;
}
footer .flinks a:hover { color: var(--gold); }
footer .fcopy { margin-top: 18px; color: rgba(185, 189, 182, 0.6); font-size: 12px; }

/* ===== Shared photo blocks ===== */
.photo, .photo img { display: block; width: 100%; }
.photo img {
  border-radius: 16px;
  border: 1px solid rgba(200, 162, 74, 0.30);
  object-fit: cover;
}
.photo.ph {
  display: flex; align-items: center; justify-content: center;
  min-height: 240px; border-radius: 16px;
  border: 1px dashed rgba(200, 162, 74, 0.45);
  background: var(--green-deep);
  color: var(--mist); font-family: var(--serif); font-style: italic; font-size: 16px;
  text-align: center; padding: 20px;
}
.photo figcaption {
  margin-top: 10px; text-align: center; color: var(--mist);
  font-size: 12.5px; letter-spacing: 0.04em;
}
.media-band { padding-top: 0; }
.media-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 860px) { .media-3 { grid-template-columns: 1fr; } }
.media-3 .photo img, .media-3 .photo.ph { height: 260px; }

/* index hero accent images */
.hero-accents { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 26px; }
@media (max-width: 860px) { .hero-accents { grid-template-columns: 1fr; } }
.hero-accents .photo img, .hero-accents .photo.ph { height: 220px; }

/* narrates BBC small note */
.bbc-note {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  justify-content: center; margin-top: 8px;
}
.bbc-note .photo { max-width: 220px; }
.bbc-note .photo img, .bbc-note .photo.ph { height: 150px; }
.bbc-note .bbc-text { max-width: 420px; }
.bbc-note .bbc-text .kicker { margin-bottom: 6px; }

/* ===== Contact form ===== */
.contact-portrait { max-width: 200px; margin: 0 auto 34px; }
.contact-portrait img { height: 200px; object-fit: cover; }
.contact-form { max-width: 560px; margin: 0 auto; }
.contact-form .field { margin-bottom: 20px; }
.contact-form label {
  display: block; margin-bottom: 8px;
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold);
}
.contact-form input,
.contact-form textarea {
  width: 100%; box-sizing: border-box;
  background: var(--green-deep);
  border: 1px solid var(--line); border-radius: 10px;
  color: var(--ivory); font-family: var(--sans); font-size: 15px;
  padding: 13px 15px; transition: 0.18s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none; border-color: var(--gold);
}
.contact-form textarea { resize: vertical; }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(185, 189, 182, 0.55); }
.contact-form button { margin-top: 6px; cursor: pointer; }
.contact-alt { text-align: center; margin-top: 30px; }

/* ===== Method — the Learning Tower ===== */
.method-charter {
  text-align: center; max-width: 760px; margin: 0 auto;
}
.method-charter .tm-line {
  font-family: var(--serif); font-size: clamp(22px, 3vw, 30px);
  font-weight: 600; line-height: 1.3;
}
.method-charter .tm-line .tm { color: var(--gold); }
.method-charter .by { display: block; margin-top: 8px; color: var(--mist);
  font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; }
.stage-badge {
  display: inline-block; margin-top: 30px;
  font-family: var(--sans); font-weight: 500; font-size: 12.5px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold);
  border: 1px solid rgba(200, 162, 74, 0.45); border-radius: 999px;
  padding: 8px 20px;
}
.tower-intro { max-width: 700px; margin: 22px auto 0; color: var(--mist); font-size: 16px; text-align: center; }
.tower-intro strong { color: var(--ivory); font-weight: 400; }

.tower { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; }
.floor {
  background: var(--green-deep);
  border: 1px solid rgba(200, 162, 74, 0.30);
  border-radius: 16px;
  padding: 34px 32px;
}
.floor .lvl-tag { font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
.floor h3 { font-family: var(--serif); font-size: clamp(28px, 4vw, 36px); font-weight: 600; margin: 6px 0 14px; }
.floor p { color: #cfe0d6; font-size: 15.5px; line-height: 1.72; }
.floor p .el { color: var(--ivory); }
.floor .pedal-cap {
  margin-top: 16px; font-family: var(--serif); font-style: italic;
  color: #d9c894; font-size: 17px;
}
.method-confirm {
  text-align: center; max-width: 720px; margin: 0 auto;
  color: var(--mist); font-size: 13.5px; line-height: 1.7;
}
.method-confirm .tm { color: var(--gold); }
.method-rights {
  max-width: 440px; margin: 0 0 0 auto;
  color: rgba(185, 189, 182, 0.32); font-size: 9px; line-height: 1.5;
  text-align: right; letter-spacing: 0.01em;
}