/* Portfolio Lê Văn Cảnh. CSS thuần, không dùng framework.
   Phong cách kính mờ trên nền xám tím. Màu và font nằm trong :root.
   Khối lớn (.panel, .nav) mới dùng backdrop-filter; thẻ bên trong (.card)
   chỉ dùng nền trắng trong suốt để trang cuộn mượt và chữ dễ đọc. */

:root {
  --ink: #12131c;
  --muted: #53576c;
  --violet: #6843e3;
  --blue: #5a7ff2;
  --grad: linear-gradient(90deg, #7f58ee, #5a82f4);
  --glass: rgba(231, 232, 240, 0.3);
  --glass-strong: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(240, 240, 246, 0.3) 45%,
    rgba(222, 223, 232, 0.24) 100%
  );
  --edge: rgba(255, 255, 255, 0.72);
  --hair: rgba(96, 100, 150, 0.16);
  --shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75),
    0 14px 36px rgba(70, 72, 110, 0.05);
  --shadow-s: inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 8px 22px rgba(70, 72, 110, 0.07);
  --dark: #0c0d17;

  --font: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo,
    "Noto Sans JP", Arial, sans-serif;

  --gutter: clamp(12px, 3vw, 32px);
  --gap: clamp(12px, 1.4vw, 18px);
  --bar-h: 72px;
  --r-xl: 28px;
  --r-l: 20px;
  --r-m: 14px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--bar-h) + 24px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html:has(dialog[open]) {
  overflow: hidden;
}

body {
  margin: 0;
  background: #e3e4eb;
  color: var(--ink);
  font: 400 1rem/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--violet);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: min(1240px, 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.stack {
  display: grid;
  gap: var(--gap);
}

/* Không cho nội dung rộng (như hàng công nghệ) kéo giãn cột lưới */
.stack > * {
  min-width: 0;
}

main.stack {
  padding-block: var(--gap) 8px;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nowrap {
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: -80px;
  left: 16px;
  padding: 10px 16px;
  background: var(--dark);
  color: #fff;
  font-weight: 600;
  border-radius: 10px;
}

.skip-link:focus {
  top: 12px;
}

/* Nền */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: radial-gradient(
      55vw 45vw at 92% 4%,
      rgba(255, 255, 255, 0.9) 0,
      transparent 60%
    ),
    radial-gradient(
      45vw 40vw at 0% 30%,
      rgba(255, 255, 255, 0.5) 0,
      transparent 62%
    ),
    radial-gradient(
      40vw 34vw at 96% 88%,
      rgba(214, 206, 246, 0.55) 0,
      transparent 65%
    ),
    radial-gradient(
      50vw 40vw at 10% 96%,
      rgba(246, 246, 250, 0.8) 0,
      transparent 60%
    ),
    linear-gradient(180deg, #e4e4eb 0%, #dcdde5 55%, #e1e1e8 100%);
}

/* Nếp lụa bên phải, mờ dần về phía trái */
.silk {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  -webkit-mask-image: radial-gradient(
    130% 120% at 100% 0%,
    #000 35%,
    rgba(0, 0, 0, 0.5) 65%,
    rgba(0, 0, 0, 0.15) 100%
  );
  mask-image: radial-gradient(
    130% 120% at 100% 0%,
    #000 35%,
    rgba(0, 0, 0, 0.5) 65%,
    rgba(0, 0, 0, 0.15) 100%
  );
}

@media (max-width: 860px) {
  .silk {
    opacity: 0.75;
  }
}

/* Khối kính */
.panel,
.nav {
  background: linear-gradient(
      170deg,
      rgba(255, 255, 255, 0.34),
      rgba(255, 255, 255, 0) 38%
    ),
    var(--glass);
  border: 1px solid var(--edge);
  border-top-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(12px) saturate(115%);
  backdrop-filter: blur(12px) saturate(115%);
}

.panel {
  position: relative;
  padding: clamp(20px, 3vw, 38px);
  border-radius: var(--r-xl);
}

.card {
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
}

@supports not (
  (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))
) {
  .panel,
  .nav {
    background: rgba(236, 237, 243, 0.92);
  }
}

/* Chữ dùng chung */
.kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--violet);
}

.title {
  margin-top: 6px;
  font-size: clamp(1.5rem, 2.6vw, 2.125rem);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 40px;
  margin-bottom: clamp(18px, 2.2vw, 26px);
}

.sec-note {
  max-width: 30rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

.sec-sub {
  max-width: 36rem;
  margin-top: 6px;
  font-size: 0.9375rem;
  color: var(--muted);
}

.tile {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--edge);
  border-radius: 12px;
  box-shadow: var(--shadow-s);
  color: var(--violet);
}

.tile-orange {
  background: linear-gradient(135deg, #ffe0b0, #ffc98a);
  color: #8f5310;
}

.tile-violet {
  background: linear-gradient(135deg, #d7c9ff, #b7a2fb);
  color: #49299f;
}

.tile-blue {
  background: linear-gradient(135deg, #c9d8ff, #a3bcfb);
  color: #23459f;
}

.tile-teal {
  background: linear-gradient(135deg, #c5f2ec, #9fe3dc);
  color: #0f665d;
}

.tile-sky {
  background: linear-gradient(135deg, #c9ecff, #9fd6f7);
  color: #0f5c86;
}

.tile-rose {
  background: linear-gradient(135deg, #ffd3e2, #f8adc8);
  color: #8f2350;
}

/* Nút */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s, background 0.18s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--dark);
  color: #fff;
  box-shadow: 0 12px 26px rgba(12, 13, 23, 0.28);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--edge);
  box-shadow: var(--shadow-s);
}

.btn-glass:hover {
  background: #fff;
}

.btn-light {
  background: #fff;
  color: var(--ink);
}

.btn-block {
  width: 100%;
  border-radius: var(--r-m);
}

.round {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  padding: 0;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--edge);
  border-radius: 50%;
  box-shadow: var(--shadow-s);
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}

.round:hover {
  background: #fff;
  transform: translateY(-1px);
}

.round-s {
  width: 36px;
  height: 36px;
  font-size: 0.875rem;
}

/* Thanh trên cùng */
.topbar {
  position: sticky;
  top: 10px;
  z-index: 50;
  margin-top: 10px;
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 64px;
  padding: 8px 12px;

  border-radius: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  margin-right: auto;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: #fff;
  border-radius: 13px;
  box-shadow: var(--shadow-s);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-text {
  display: grid;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 0.9375rem;
  font-weight: 600;
}

.brand-text small {
  font-size: 0.75rem;
  color: var(--muted);
}

.menu {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 0.8125rem;
  font-weight: 500;
}

.menu a {
  position: relative;
  padding: 8px 11px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.menu a:hover {
  color: var(--ink);
}

.menu a.is-active {
  background: #fff;
  color: var(--ink);
  box-shadow: var(--shadow-s);
}

.menu-contact {
  display: none;
}

.lang {
  display: flex;
  flex: none;
  gap: 2px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--edge);
  border-radius: 999px;
}

.lang button {
  min-width: 36px;
  min-height: 36px;
  padding: 0 6px;
  background: none;
  border: 0;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang button[aria-pressed="true"] {
  background: var(--dark);
  color: #fff;
}

.talk {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  min-height: 44px;
  padding: 0 16px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--edge);
  border-radius: 999px;
  box-shadow: var(--shadow-s);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s;
}

.talk:hover {
  background: #fff;
}

.menu-toggle {
  display: none;
  flex: none;
  white-space: nowrap;
  min-height: 44px;
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}

/* Đầu trang */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: stretch;
  padding-block: clamp(28px, 4vw, 52px) clamp(18px, 2.4vw, 30px);
  overflow: hidden;
}

.hero-copy {
  align-self: center;
  padding-bottom: clamp(24px, 3.4vw, 44px);
}

.hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #27b37a;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(39, 179, 122, 0.18);
}

.hero-name {
  margin-top: 10px;
  font-size: clamp(2.75rem, 6vw, 4.625rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  animation: lift 0.7s var(--ease) both;
}

.hero-role {
  margin-top: 8px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(1.5rem, 3.1vw, 2.625rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  animation: lift 0.7s 0.06s var(--ease) both;
}

.hero-thesis {
  max-width: 31rem;
  margin-top: 16px;
  font-size: clamp(1.0625rem, 1.4vw, 1.1875rem);
  line-height: 1.55;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* Liên kết nhanh dưới nút: GitHub, email, điện thoại và nơi ở */
.hero-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(28px, 3.6vw, 44px);
}

.hero-links .round {
  color: var(--ink);
}

.hero-links .round:hover {
  color: var(--violet);
}

.hero-divider {
  width: 1px;
  height: 24px;
  margin: 0 6px;
  background: rgba(96, 100, 150, 0.25);
}

.hero-loc {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9375rem;
  color: var(--muted);
}

.hero-loc .icon {
  color: var(--violet);
}

.hero-visual {
  position: relative;
  align-self: end;
  justify-self: end;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 560 / 600;
}

/* Khung kính: viewBox 560 x 600, cạnh trái hơi nghiêng, góc dưới phải cắt chéo.
   Người bị cắt theo đáy khung, tóc được nhô lên khỏi cạnh trên. */
.hero-art {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  animation: lift 0.8s 0.1s var(--ease) both;
}

.hero-orb {
  position: absolute;
  left: 0;
  top: 58%;
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  background: radial-gradient(
    circle at 34% 28%,
    #fff,
    rgba(232, 228, 255, 0.75) 62%,
    rgba(190, 180, 245, 0.7)
  );
  border: 1px solid #fff;
  border-radius: 50%;
  box-shadow: 0 14px 34px rgba(113, 96, 214, 0.28);
  color: var(--violet);
  font-size: 1.625rem;
}

.hero-orb .icon {
  fill: currentColor;
  stroke: none;
}

.float {
  position: absolute;
  z-index: 2;
  display: grid;
  border-radius: var(--r-l);
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
  animation: bob 5s ease-in-out infinite;
}

.float:hover {
  transform: translateY(-4px) scale(1.02);
}

.float-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 11px;
  font-size: 1.0625rem;
}

/* Giải Nhất: thẻ nền tím xanh, chữ trắng */
.float-top {
  top: 6%;
  right: 0;
  justify-items: center;
  min-width: 148px;
  padding: 14px 18px 16px;
  background: radial-gradient(
      120% 80% at 20% 0%,
      rgba(255, 255, 255, 0.28),
      transparent 60%
    ),
    linear-gradient(145deg, #7f58ee, #5a82f4);
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 18px 40px rgba(104, 84, 230, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  color: #fff;
  text-align: center;
}

.float-top .float-icon {
  margin-bottom: 4px;
  background: rgba(255, 255, 255, 0.22);
  color: #ffe08a;
}

.float-top strong {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #ffd60a;
  text-shadow: 0 2px 8px rgba(40, 20, 120, 0.45);
}

.float-top sup {
  font-size: 0.42em;
  margin-left: 1px;
}

.float-name {
  margin-top: 4px;
  font-size: 0.9375rem;
  font-weight: 600;
}

.float-top small {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.85);
}

/* Thủ khoa: thẻ trắng viền gradient. Không hẹp hơn 190px để nhãn "Valedictorian" không tràn ra viền */
.float-bottom {
  right: 0;
  bottom: 12%;
  width: clamp(190px, 50%, 250px);
  padding: 14px 16px 12px;
  background: linear-gradient(#ffffff40, #fff) padding-box,
    linear-gradient(135deg, #a78bff, #5a82f4) border-box;
  border: 2px solid transparent;
  box-shadow: 0 20px 44px rgba(84, 88, 180, 0.28);
  animation-delay: -2.5s;
}

.float-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.3;
}

/* Chữ vàng trên nền trắng không đọc được, nên đặt trong nhãn nền tối */
.float-head > span:last-child {
  padding: 3px 9px;
  background: #3540b3e3;
  border-radius: 8px;
  color: #ffd60a;
}

.float-bottom .float-icon {
  background: var(--grad);
  color: #fff;
}

.float-bottom strong {
  margin-top: 8px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 2.125rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.float-bottom strong small {
  font-size: 0.5em;
  font-weight: 600;
  letter-spacing: 0;
}

@keyframes bob {
  50% {
    translate: 0 -6px;
  }
}

.spark {
  width: 100%;
  height: 40px;
  margin-top: 2px;
}

@keyframes lift {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}

/* Giới thiệu */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
  padding: clamp(14px, 1.6vw, 20px);
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
}

.stats li {
  display: grid;
  align-content: start;
  gap: 2px;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--muted);
}

.stats .tile {
  width: 36px;
  height: 36px;
  margin-bottom: 8px;
  font-size: 0.875rem;
}

.stats strong {
  font-size: 1.625rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.about-text {
  display: grid;
  justify-items: start;
  gap: 12px;
  color: var(--muted);
}

.about-text strong {
  font-weight: 600;
  color: var(--ink);
}

.about-text .btn {
  margin-top: 6px;
  color: var(--ink);
}

/* Kỹ năng */
.skills-panel {
  overflow: visible;
}

.deco-sphere {
  position: absolute;
  top: -40px;
  right: calc(-1 * min(46px, var(--gutter)));
  z-index: 1;
  width: 150px;
  height: 150px;
  background: radial-gradient(
    circle at 30% 24%,
    rgba(255, 255, 255, 0.98) 0,
    rgba(255, 255, 255, 0.55) 9%,
    rgba(255, 255, 255, 0.08) 34%,
    rgba(214, 214, 232, 0.18) 62%,
    rgba(255, 255, 255, 0.75) 97%
  );
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  box-shadow: inset -14px -18px 30px rgba(140, 142, 190, 0.28),
    inset 10px 12px 22px rgba(255, 255, 255, 0.65),
    0 22px 44px rgba(70, 72, 120, 0.14);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  pointer-events: none;
}

.skill-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: clamp(16px, 2vw, 24px);
}

.skill {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 20px 20px 54px;
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}

.skill:has(.tile-orange) {
  --tint: rgba(255, 196, 120, 0.42);
}

.skill:has(.tile-violet) {
  --tint: rgba(176, 150, 255, 0.4);
}

.skill:has(.tile-blue) {
  --tint: rgba(140, 170, 255, 0.4);
}

.skill:has(.tile-teal) {
  --tint: rgba(120, 220, 210, 0.42);
}

.skill:has(.tile-sky) {
  --tint: rgba(130, 205, 250, 0.4);
}

.skill:has(.tile-rose) {
  --tint: rgba(250, 160, 195, 0.38);
}

.skill {
  background: radial-gradient(
      90% 70% at 0% 100%,
      var(--tint, transparent),
      transparent 70%
    ),
    var(--glass-strong);
}

.skill:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.skill h3 {
  margin-top: 8px;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
}

.skill p {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--muted);
}

.skill-go {
  position: absolute;
  right: 16px;
  bottom: 14px;
  color: var(--muted);
}

/* Hàng công nghệ tự chạy từ phải sang trái, dừng khi rê chuột hoặc focus */
.marquee {
  margin-top: clamp(16px, 2vw, 22px);
  overflow: hidden;
  border-radius: var(--r-m);
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    #000 6%,
    #000 94%,
    transparent
  );
  mask-image: linear-gradient(
    90deg,
    transparent,
    #000 6%,
    #000 94%,
    transparent
  );
}

.marquee-track {
  --track-gap: 10px;
  display: flex;
  gap: var(--track-gap);
  width: max-content;
  padding: 6px 0 10px;
  animation: marquee var(--marquee-time, 120s) linear infinite;
}

.marquee:hover .marquee-track,
.marquee:focus-within .marquee-track {
  animation-play-state: paused;
}

.marquee-track li {
  width: 104px;
  flex: none;
}

/* Dải chứng nhận: cuộn ngang bằng nút ‹ ›, giống dải báo chí */
.cert-rail {
  grid-auto-columns: calc((100% - 2 * var(--gap)) / 3);
}

.cert-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 10px;
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
  text-align: left;
  cursor: zoom-in;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}

.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* Hiệu ứng rê chuột kiểu "square effect 4": hai mảng tối quét chéo phủ ảnh,
   dải thông tin xoay từ đường chéo về nằm ngang ở giữa */
.cert-thumb {
  position: relative;
}

.fx-mask {
  position: absolute;
  inset: 0;
  background: rgba(14, 12, 36, 0.58);
  transition: transform 0.35s ease-in-out;
}

.fx-a {
  clip-path: polygon(0 0, 100% 0, 0 100%);
  transform: translate(-100%, -100%);
}

.fx-b {
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transform: translate(100%, 100%);
}

.fx-info {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 100%;
  padding: 0 14px;
  background: rgba(10, 9, 26, 0.72);
  color: #fff;
  text-align: center;
  transform: translate(-50%, -50%) rotate(-34deg) scaleY(0);
  transition: transform 0.35s ease-in-out;
}

.fx-info strong {
  padding: 12px 4px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
  opacity: 0;
  transition: opacity 0.35s ease-in-out 0.35s;
}

.fx-info small {
  padding: 10px 4px 12px;
  font-size: 0.8125rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.78);
  opacity: 0;
  transition: opacity 0.35s ease-in-out 0.35s;
}

.cert-card:hover .fx-mask,
.cert-card:focus-visible .fx-mask {
  transform: translate(0, 0);
}

.cert-card:hover .fx-info,
.cert-card:focus-visible .fx-info {
  transform: translate(-50%, -50%) rotate(0) scaleY(1);
}

.cert-card:hover .fx-info > *,
.cert-card:focus-visible .fx-info > * {
  opacity: 1;
}

/* Màn hình cảm ứng không rê chuột được: luôn hiện dải thông tin ở đáy ảnh */
@media (hover: none) {
  .fx-mask {
    display: none;
  }

  .cert-card .cert-thumb {
    height: auto;
    overflow: visible;
    background: none;
  }

  .cert-card .cert-thumb img {
    background: linear-gradient(
      140deg,
      rgba(244, 242, 252, 0.8),
      rgba(222, 224, 238, 0.6)
    );
    border-radius: var(--r-m);
  }

  .fx-info {
    position: static;
    width: 100%;
    padding: 10px 4px 2px;
    background: none;
    color: var(--ink);
    text-align: left;
    transform: none;
    transition: none;
  }

  .fx-info strong,
  .fx-info small {
    opacity: 1;
    transition: none;
  }

  /* iPhone giữ trạng thái :hover sau khi chạm, nên ghi đè cả trạng thái đó */
  .cert-card:hover .fx-info,
  .cert-card:focus-visible .fx-info {
    transform: none;
  }

  .fx-info strong {
    padding: 0;
    border: 0;
    font-size: 0.9375rem;
  }

  .fx-info small {
    padding: 2px 0 0;
    font-style: normal;
    color: var(--muted);
  }
}

.cert-thumb {
  display: grid;
  place-items: center;
  height: var(--cert-h, 230px);
  overflow: hidden;
  border-radius: var(--r-m);
  background: linear-gradient(
    140deg,
    rgba(244, 242, 252, 0.8),
    rgba(222, 224, 238, 0.6)
  );
}

.cert-thumb img {
  width: 100%;
  height: var(--cert-h, 230px);
  max-width: 100%;
  object-fit: contain;
  border-radius: 8px;
}

@keyframes marquee {
  to {
    transform: translateX(calc(-50% - var(--track-gap) / 2));
  }
}

.sec-head-tight {
  align-items: center;
  margin-bottom: 0;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px;
}

.tech-group h3 {
  margin: 8px 0 10px;
}

.sheet .tech li {
  background: #fff;
}

.tech-mono {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--grad);
  border-radius: 9px;
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tech li {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 14px 6px 10px;
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-m);
  box-shadow: var(--shadow-s);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
}

.tech img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.tech-note {
  margin-top: 14px;
  font-size: 0.875rem;
  color: var(--muted);
}

.tech-note strong {
  font-weight: 600;
  color: var(--ink);
}

/* Dự án */
.work-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}

.work {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}

.work:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.work-wide {
  grid-column: span 2;
}

.thumb {
  position: relative;
  display: grid;
  flex: 1;
  place-items: center;
  height: clamp(190px, 19vw, 250px);
  padding: 14px;
  background: linear-gradient(
    140deg,
    rgba(244, 242, 252, 0.7),
    rgba(222, 224, 238, 0.55)
  );
}

.thumb img {
  width: auto;
  max-width: 100%;
  max-height: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(60, 60, 120, 0.16);
  transition: transform 0.35s var(--ease);
}

.work:hover .thumb img {
  transform: scale(1.02);
}

.thumb-note {
  position: absolute;
  right: 8px;
  bottom: 6px;
  padding: 1px 8px;
  background: rgba(255, 255, 255, 0.82);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--muted);
}

.work-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
}

.work-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.work-title button {
  padding: 0;
  background: none;
  border: 0;
  font: inherit;
  letter-spacing: inherit;
  text-align: left;
  cursor: pointer;
}

.work-title button:focus-visible {
  outline: none;
}

.work-title button:focus-visible::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-l);
  outline: 3px solid var(--violet);
  outline-offset: -3px;
}

.work-meta {
  margin-top: 2px;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--muted);
}

.score {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 10px;
  background: linear-gradient(90deg, #ece6ff, #e2e9ff);
  border-radius: 999px;
  font-size: 0.75rem;
  color: #4a37a8;
}

.score b {
  font-weight: 700;
}

.go {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--shadow-s);
  font-size: 0.875rem;
  transition: transform 0.2s var(--ease);
}

.work:hover .go {
  transform: translate(2px, -2px);
}

/* Thẻ ERP: không có ảnh, hiện số liệu và sơ đồ */
.thumb-map {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: 20px;
  padding: clamp(16px, 2vw, 24px);
}

.nums {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.25rem, 1fr));
  gap: 12px 18px;
  width: 100%;
}

.nums div {
  display: flex;
  flex-direction: column;
}

.nums dd {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.nums dt {
  font-size: 0.8125rem;
  line-height: 1.35;
  color: var(--muted);
}

.thumb-map .nums {
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
}

.thumb-map .nums dd {
  font-size: 1.25rem;
}

.erp-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 36px minmax(0, 1fr);
  align-items: center;
  width: 100%;
  font-size: 0.8125rem;
  line-height: 1.3;
}

.erp-map ul {
  position: relative;
  display: grid;
  gap: 8px;
  grid-column: 1 / 3;
}

.erp-map ul::after {
  content: "";
  position: absolute;
  top: 17px;
  bottom: 17px;
  right: 0;
  width: 1px;
  background: #a5a6d8;
}

.erp-map li {
  position: relative;
  margin-right: 24px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 10px;
  color: var(--muted);
}

.erp-map li::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -24px;
  width: 24px;
  height: 1px;
  background: #a5a6d8;
}

.erp-hub {
  position: relative;
  grid-column: 3;
  margin-left: 14px;
  padding: 14px 8px;
  background: var(--grad);
  color: #fff;
  font-weight: 600;
  text-align: center;
  border-radius: 12px;
}

.erp-hub::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -14px;
  width: 14px;
  height: 1px;
  background: #a5a6d8;
}

/* Hành trình */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.2vw, 28px);
  margin-top: clamp(16px, 2vw, 24px);
}

.step {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 18px 20px 20px;
}

.step:not(:nth-child(3n))::after {
  content: "";
  position: absolute;
  top: 50%;
  right: calc(clamp(20px, 2.2vw, 28px) / -2 - 5px);
  width: 9px;
  height: 9px;
  border-top: 2px solid #8a7be8;
  border-right: 2px solid #8a7be8;
  transform: rotate(45deg);
}

.step-no {
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 1.625rem;
  font-weight: 500;
  line-height: 1;
  color: #a79fe6;
}

.step time {
  padding-right: 44px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--violet);
}

.step h3 {
  margin-top: 4px;
  padding-right: 34px;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
}

.step-role {
  margin-top: 4px;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.4;
}

.step > p:last-child {
  margin-top: 8px;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--muted);
}

/* 9 trạm + ô "Đội của bạn?": ô cuối trải hết hàng để lưới không bị lẻ */
.step-next {
  grid-column: 1 / -1;
}

.step-next::after {
  display: none !important;
}

.step-next {
  justify-content: center;
  align-items: flex-start;
  gap: 4px;
  background: var(--dark);
  border-radius: var(--r-l);
  color: #fff;
}

.step-next time {
  color: #b9adff;
}

.step-next h3 {
  margin: 0 0 10px;
  padding: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

/* Thành tích */
.awards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.award {
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 28px);
}

.award p:not([class]) {
  max-width: 34em;
  font-size: 0.9375rem;
  color: var(--muted);
}

.award-kicker {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
}

.award-title {
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.award-big {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1;
  color: var(--muted);
}

.award-big strong {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(3.25rem, 5.4vw, 4.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
}

.award-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 40%);
  align-items: start;
  gap: 12px clamp(14px, 2vw, 24px);
  width: 100%;
}

.scores {
  width: 100%;
  margin-block: 10px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.scores caption {
  padding-bottom: 6px;
  text-align: left;
  font-size: 0.8125rem;
  color: var(--muted);
}

.scores th {
  width: 5.5rem;
  padding: 4px 10px 4px 0;
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
}

.scores td {
  padding: 4px 0;
}

.scores .val {
  width: 2.5rem;
  text-align: right;
  font-weight: 600;
}

.bar {
  display: block;
  height: 8px;
  background: rgba(96, 100, 150, 0.14);
  border-radius: 4px;
}

.bar span {
  display: block;
  width: calc(var(--v) * 1%);
  height: 100%;
  background: var(--grad);
  border-radius: 4px;
}

.cert {
  position: relative;
  display: block;
  width: 100%;
  margin-top: auto;
  padding: 0;
  background: none;
  border: 0;
  border-radius: var(--r-m);
  overflow: hidden;
  cursor: zoom-in;
}

.cert img {
  width: 100%;
  transition: transform 0.3s var(--ease);
}

.cert:hover img {
  transform: scale(1.02);
}

.cert-open {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--dark);
  color: #fff;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
}

.cert-portrait {
  margin-top: 4px;
  overflow: visible;
}

.cert-portrait img {
  border-radius: var(--r-m);
  box-shadow: var(--shadow-s);
}

.cert-portrait .cert-open {
  position: static;
  display: flex;
  justify-content: center;
  margin-top: 8px;
  padding: 7px 6px;
  line-height: 1.3;
}

@container (max-width: 400px) {
  .award-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .cert-portrait {
    max-width: none;
  }

  .award > .btn,
  .cert-portrait .cert-open {
    width: 100%;
    min-height: 48px;
    font-size: 0.9375rem;
  }
}

.award-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: var(--gap);
  padding: clamp(16px, 2vw, 22px) clamp(18px, 2.4vw, 28px);
}

.award-note h3 {
  font-size: clamp(1.125rem, 1.8vw, 1.375rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.award-note-focus {
  margin-top: 2px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--violet);
}

.award-note-side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.award-note-sub {
  margin-top: 2px;
  font-size: 0.9375rem;
  color: var(--muted);
}

.award-note-sub a {
  color: var(--ink);
  text-underline-offset: 3px;
}

.award-note-score {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--muted);
}

.award-note-score strong {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 2.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

/* Báo chí */
/* Nút chuyển bài nằm hai bên dải bài báo, giữa chiều cao ảnh */
.rail-wrap {
  position: relative;
}

.rail-btn {
  position: absolute;
  top: 50%;
  z-index: 2;
  transform: translateY(-50%);
}

.rail-btn:hover {
  transform: translateY(calc(-50% - 1px));
}

.rail-prev {
  left: -22px;
}

.rail-next {
  right: -22px;
}

.rail-btn:disabled {
  opacity: 0;
  pointer-events: none;
}

.rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 2 * var(--gap)) / 3);
  gap: var(--gap);
  margin: -6px;
  padding: 6px 6px 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: 6px;
  scrollbar-width: none;
}

.rail::-webkit-scrollbar {
  display: none;
}

.rail li {
  display: grid;
  scroll-snap-align: start;
}

.press-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--glass-strong);
  border: 1px solid var(--edge);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
  text-decoration: none;
  transition: box-shadow 0.2s, transform 0.2s var(--ease);
}

.press-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.press-photo {
  display: block;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: #e4e4f4;
}

.press-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}

.press-card:hover .press-photo img {
  transform: scale(1.03);
}

.press-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px 18px;
}

.press-body time {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--violet);
}

.press-body strong {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.45;
}

.press-about {
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--muted);
}

.press-go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Khoảnh khắc: ba ảnh cùng chiều cao, giữ nguyên tỉ lệ gốc */
.frames {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.5fr) minmax(0, 1fr);
  gap: var(--gap);
  margin-top: clamp(16px, 2vw, 24px);
}

.frame button {
  display: block;
  width: 100%;
  padding: 0;
  background: none;
  border: 0;
  border-radius: var(--r-l);
  overflow: hidden;
  box-shadow: var(--shadow-s);
  cursor: zoom-in;
}

.frame img {
  width: 100%;
  transition: transform 0.4s var(--ease);
}

.frame button:hover img {
  transform: scale(1.025);
}

.frame figcaption {
  margin-top: 8px;
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--muted);
}

/* Liên hệ */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr) minmax(0, 0.62fr);
  gap: clamp(18px, 2.6vw, 34px);
  align-items: center;
  overflow: hidden;
}

.contact-lead {
  margin-top: 10px;
  font-size: 0.9375rem;
  color: var(--muted);
}

.contact-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  font-size: 0.875rem;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.contact-list .tile {
  width: 36px;
  height: 36px;
  font-size: 0.875rem;
}

.contact-list a {
  min-width: 0;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.contact-list a:hover {
  color: var(--violet);
}

.contact-form {
  display: grid;
  gap: 10px;
  padding: clamp(14px, 1.8vw, 20px);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.contact-form label {
  display: block;
}

.contact-form input,
.contact-form textarea {
  display: block;
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: inset 0 1px 2px rgba(70, 72, 110, 0.06);
  border-radius: var(--r-m);
  font-size: 0.9375rem;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--muted);
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline-offset: 0;
  border-radius: var(--r-m);
}

.form-note {
  min-height: 1.3em;
  font-size: 0.8125rem;
  color: var(--muted);
  text-align: center;
}

.form-note[data-state="ok"] {
  color: #17845a;
  font-weight: 600;
}

.form-note[data-state="error"] {
  color: #b42318;
  font-weight: 600;
}

.contact-form button[disabled] {
  opacity: 0.6;
  cursor: progress;
}

.sculpture svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 30px rgba(113, 96, 214, 0.22));
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 16px;
  padding: 16px 64px 24px;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted);
}

.foot p {
  margin: 0;
}

/* Nút xem lại hiệu ứng dựng trang */
.foot-link {
  padding: 0;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.foot-link:hover {
  color: var(--violet);
}

/* Hộp chi tiết dự án */
.sheet {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(780px, 100vw);
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-left: 1px solid #fff;
  background: #f4f4fb;
  color: var(--ink);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.sheet[open] {
  animation: slide 0.3s var(--ease);
}

.sheet::backdrop,
.lightbox::backdrop {
  background: rgba(40, 40, 80, 0.42);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

@keyframes slide {
  from {
    transform: translateX(48px);
    opacity: 0;
  }
}

.sheet-bar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px clamp(18px, 4vw, 40px);
  background: rgba(244, 244, 251, 0.92);
  border-bottom: 1px solid var(--hair);
}

.sheet-meta {
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--muted);
}

.sheet-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 4vw, 40px);
}

.sheet-body h2 {
  font-size: clamp(1.75rem, 4.4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.sheet-lead {
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--muted);
}

.sheet-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sheet-links .btn {
  min-height: 44px;
  padding-inline: 16px;
  font-size: 0.875rem;
}

.sheet-body .thumb {
  flex: none;
  height: auto;
  border-radius: var(--r-l);
}

.sheet-body h3 {
  margin-top: 10px;
  font-size: 1.125rem;
  font-weight: 600;
}

.ticks {
  display: grid;
  gap: 10px;
  font-size: 0.9375rem;
  color: #2c2e3f;
}

.ticks li {
  position: relative;
  padding-left: 20px;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--grad);
  border-radius: 50%;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chips li {
  padding: 4px 12px;
  background: #fff;
  border-radius: 999px;
  box-shadow: var(--shadow-s);
  font-size: 0.8125rem;
  color: var(--muted);
}

.sheet-note {
  margin-top: 6px;
  padding: 14px 16px;
  background: #fff;
  border-radius: var(--r-m);
  font-size: 0.875rem;
  color: var(--muted);
}

.results-wrap {
  overflow-x: auto;
}

.results {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.results caption {
  padding-bottom: 8px;
  text-align: left;
  font-size: 0.8125rem;
  color: var(--muted);
}

.results th,
.results td {
  padding: 9px 10px 9px 0;
  border-top: 1px solid var(--hair);
  text-align: right;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.results thead th {
  border-top: 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

.results th:first-child {
  text-align: left;
}

.results th:last-child,
.results td:last-child {
  padding-right: 0;
}

.results tbody tr:first-child th,
.results tbody tr:first-child td {
  font-weight: 700;
}

.results tbody tr:first-child th::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--grad);
  border-radius: 50%;
}

/* Bảng điểm xem ngay trên site */
.transcript-page {
  display: grid;
  gap: 8px;
}

.transcript-page img {
  width: 100%;
  border-radius: var(--r-m);
  box-shadow: var(--shadow-s);
  background: #fff;
}

.transcript-page figcaption {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
}

/* Xem ảnh lớn */
.lightbox {
  width: fit-content;
  max-width: min(1200px, 94vw);
  max-height: 94dvh;
  margin: auto;
  padding: 0;
  background: none;
  border: 0;
  color: #fff;
  overflow: visible;
}

.lightbox img {
  width: auto;
  max-width: 100%;
  max-height: 84dvh;
  border-radius: var(--r-m);
}

.lightbox p {
  margin-top: 10px;
  font-size: 0.9375rem;
}

.lightbox .round {
  position: absolute;
  top: 8px;
  right: 8px;
  color: var(--ink);
}

/* Thông báo */
/* Nút về đầu trang: hiện sau khi cuộn qua phần đầu */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  width: 48px;
  height: 48px;
  color: var(--ink);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s var(--ease), background 0.15s;
}

.to-top.is-on {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.to-top:hover {
  color: var(--violet);
}

@media (max-width: 560px) {
  .to-top {
    right: 14px;
    bottom: 14px;
    width: 42px;
    height: 42px;
  }
}

.toast {
  position: fixed;
  z-index: 60;
  left: 50%;
  bottom: 24px;
  padding: 12px 18px;
  background: var(--dark);
  color: #fff;
  border-radius: 999px;
  font-size: 0.875rem;
  transform: translate(-50%, 16px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s var(--ease);
}

.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Màn hình vừa: menu thu gọn */
@media (max-width: 1180px) {
  .menu-toggle {
    display: block;
  }

  .talk {
    display: none;
  }

  .menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    background: rgba(250, 250, 255, 0.97);
    border: 1px solid #fff;
    border-radius: var(--r-l);
    box-shadow: var(--shadow);
    font-size: 0.9375rem;
  }

  .menu.is-open {
    display: flex;
  }

  .menu a {
    padding: 11px 14px;
    color: var(--ink);
  }

  .menu-contact {
    display: block;
    margin-top: 4px;
    background: var(--dark);
    color: #fff !important;
    text-align: center;
  }

  .about {
    grid-template-columns: minmax(0, 1fr);
  }

  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .awards {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  }

  .sculpture {
    display: none;
  }
}

/* Máy bảng dọc */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 24px;
  }

  .hero-copy {
    padding-bottom: 8px;
  }

  .hero-visual {
    justify-self: center;
    max-width: 520px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .work-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step:not(:nth-child(3n))::after {
    display: none;
  }

  .step:nth-child(odd):not(:last-child)::after {
    display: block;
  }

  .rail {
    grid-auto-columns: calc((100% - var(--gap)) / 2);
  }

  .contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .frames {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .frame-wide {
    grid-column: 1 / -1;
    grid-row: 1;
  }
}

/* Điện thoại */
/* Liên kết nhanh trên điện thoại: bỏ vạch ngăn, vị trí xuống dòng riêng */
@media (max-width: 560px) {
  .hero-divider {
    display: none;
  }

  .hero-loc {
    flex-basis: 100%;
    margin-top: 2px;
  }
}

@media (max-width: 560px) {
  .nav {
    gap: 6px;
    padding-inline: 8px;
  }

  .lang button {
    min-width: 32px;
    padding: 0 4px;
  }

  .menu-toggle {
    padding: 0 10px;
  }

  .marquee-track li {
    width: 92px;
  }

  .cert-thumb {
    --cert-h: 180px;
  }

  .brand-text small {
    display: none;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .hero-orb {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }

  .float-top {
    top: 0;
    right: -6px;
    min-width: 92px;
    padding: 8px 10px;
  }

  .float-top .float-icon {
    display: none;
  }

  .float-top strong {
    font-size: 1.875rem;
  }

  .float-name {
    font-size: 0.8125rem;
  }

  .float-icon {
    width: 28px;
    height: 28px;
    font-size: 0.9375rem;
  }

  /* 168px để chữ "Valedictorian" trong nhãn không tràn chạm viền phải của thẻ */
  .float-bottom {
    right: -6px;
    bottom: -14px;
    width: 168px;
    padding: 8px 10px;
  }

  .float-head {
    gap: 8px;
    font-size: 0.75rem;
  }

  .float-bottom strong {
    margin-top: 4px;
    font-size: 1.625rem;
  }

  .float-bottom .spark {
    display: none;
  }

  .skill-grid,
  .work-grid,
  .steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .work-wide {
    grid-column: auto;
  }

  .thumb {
    height: auto;
    min-height: 170px;
  }

  .thumb-map {
    grid-template-columns: minmax(0, 1fr);
  }

  .step::after,
  .step:nth-child(odd):not(:last-child)::after {
    display: none !important;
  }

  .rail {
    grid-auto-columns: 86%;
  }

  .rail-prev {
    left: -12px;
  }

  .rail-next {
    right: -12px;
  }

  .field-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .results th,
  .results td {
    padding-right: 6px;
    font-size: 0.8125rem;
  }

  .deco-sphere {
    width: 96px;
    height: 96px;
    top: -26px;
    right: -18px;
  }
}

/* Tiếng Nhật: bỏ giãn chữ âm của tiêu đề, xuống dòng đúng quy tắc tiếng Nhật */
:lang(ja) h1,
:lang(ja) h2,
:lang(ja) h3,
:lang(ja) .hero-role,
:lang(ja) .title {
  letter-spacing: 0;
}

:lang(ja) body {
  line-break: strict;
  overflow-wrap: anywhere;
}

/* Màn hình rất hẹp: ẩn tên cạnh logo để thanh trên đủ chỗ cho 3 nút ngôn ngữ */
@media (max-width: 400px) {
  .brand-text {
    display: none;
  }
}

/* Điện thoại và máy tính bảng (màn hình cảm ứng hoặc hẹp):
   Safari trên iPhone dễ bị treo vì hết bộ nhớ đồ họa khi gặp bộ lọc làm mờ
   trên cả màn hình. Ở đây tắt gợn sóng lụa và mọi backdrop-filter,
   thay bằng nền kính đục hơn để vẫn giữ được kiểu dáng. */
@media (hover: none), (pointer: coarse), (max-width: 860px) {
  .silk {
    display: none;
  }

  .bg {
    background: linear-gradient(
        118deg,
        transparent 30%,
        rgba(255, 255, 255, 0.55) 40%,
        transparent 50%
      ),
      linear-gradient(
        118deg,
        transparent 58%,
        rgba(255, 255, 255, 0.4) 66%,
        transparent 74%
      ),
      radial-gradient(
        70vw 50vw at 95% 5%,
        rgba(255, 255, 255, 0.9) 0,
        transparent 60%
      ),
      radial-gradient(
        60vw 50vw at 100% 90%,
        rgba(214, 206, 246, 0.5) 0,
        transparent 65%
      ),
      linear-gradient(180deg, #e4e4eb 0%, #dcdde5 55%, #e1e1e8 100%);
  }

  .panel,
  .nav,
  .float,
  .to-top,
  .deco-sphere,
  .sheet::backdrop,
  .lightbox::backdrop {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }

  .panel {
    background: linear-gradient(
        170deg,
        rgba(255, 255, 255, 0.5),
        rgba(255, 255, 255, 0) 40%
      ),
      rgba(236, 237, 243, 0.82);
  }

  .nav {
    background: rgba(244, 244, 249, 0.94);
  }

  .float {
    box-shadow: 0 10px 24px rgba(84, 88, 150, 0.18);
  }

  .to-top {
    background: rgba(255, 255, 255, 0.92);
  }

  .sheet::backdrop,
  .lightbox::backdrop {
    background: rgba(30, 30, 60, 0.6);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .marquee {
    overflow-x: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Hiệu ứng dựng trang (assets/swarm.js). Chỉ có tác dụng khi <html> có class "swarm":
   phần trang chưa tới lượt và các mảnh chưa dựng được ẩn bằng opacity. */
html.swarm main > :is(section, footer):not(.sw-open),
html.swarm .sw-t {
  opacity: 0 !important;
}

html.swarm .sw-fade {
  transition: opacity 0.35s ease !important;
}

/* Con trỏ đã dựng phần đầu trang nên bỏ hiệu ứng trồi lên lúc tải */
html:is(.swarm, .swarm-ran) :is(.hero-name, .hero-role, .hero-art) {
  animation: none;
}

.sw-layer {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 35;
  width: 100%;
  height: 0;
  pointer-events: none;
}

.sw-layer > * {
  position: absolute;
  top: 0;
  left: 0;
}

.sw-cur {
  transition: opacity 0.4s;
  will-change: transform;
}

.sw-cur.is-away {
  opacity: 0;
}

.sw-cur svg {
  position: absolute;
  width: 24px;
  height: 24px;
  overflow: visible;
  filter: drop-shadow(0 1px 1.5px rgba(18, 19, 28, 0.3));
  transition: scale 0.12s;
}

.sw-cur[data-mode="arrow"] svg {
  left: -4px;
  top: -3px;
  transform-origin: 4px 3px;
}

.sw-cur:not([data-mode="arrow"]) svg {
  left: -12px;
  top: -12px;
}

.sw-cur.is-down svg {
  scale: 0.86;
}

.sw-cur svg > g {
  display: none;
}

.sw-cur[data-mode="arrow"] .sw-arrow,
.sw-cur[data-mode="cross"] .sw-cross,
.sw-cur[data-mode="beam"] .sw-beam {
  display: inline;
}

.sw-arrow path {
  fill: var(--c);
  stroke: #fff;
  stroke-width: 1.5;
  stroke-linejoin: round;
}

.sw-cross path,
.sw-beam path {
  fill: none;
  stroke: var(--c);
  stroke-width: 2;
  stroke-linecap: round;
}

.sw-cur .sw-halo {
  stroke: #fff;
  stroke-width: 4.5;
}

.sw-name {
  position: absolute;
  left: 13px;
  top: 17px;
  padding: 2px 7px;
  background: var(--c);
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(18, 19, 28, 0.18);
  color: var(--ct, #fff);
  font: 600 0.6875rem/1.4 var(--font);
  white-space: nowrap;
}

.sw-cur.is-flip .sw-name {
  left: auto;
  right: 4px;
}

/* Dấu + khi đang kéo bản sao */
.sw-cur.is-copy::after {
  content: "+";
  position: absolute;
  left: 9px;
  top: -4px;
  width: 14px;
  height: 14px;
  background: var(--c);
  border-radius: 50%;
  box-shadow: 0 0 0 1.5px #fff;
  color: var(--ct, #fff);
  font: 700 0.6875rem/14px var(--font);
  text-align: center;
}

.sw-box {
  border: 1.5px solid var(--c);
  background: color-mix(in srgb, var(--c) 8%, transparent);
  transition: opacity 0.3s;
}

.sw-box.is-text {
  border-width: 1px;
  background: none;
  opacity: 0.6;
}

.sw-box.is-ghost {
  border-style: dashed;
  background: color-mix(in srgb, var(--c) 12%, transparent);
}

.sw-box.is-out {
  opacity: 0;
}

.sw-size {
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  translate: -50% 0;
  padding: 1px 6px;
  background: var(--c);
  border-radius: 4px;
  color: var(--ct, #fff);
  font: 600 0.625rem/1.5 var(--font);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sw-caret {
  width: 2px;
  background: var(--c);
  border-radius: 1px;
}

.sw-skip {
  position: fixed;
  left: 20px;
  bottom: 20px;
  z-index: 41;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px 9px 16px;
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--edge);
  border-radius: 999px;
  box-shadow: var(--shadow-s);
  color: var(--ink);
  font: 500 0.8125rem/1.2 var(--font);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s var(--ease), visibility 0.25s;
}

.sw-skip.is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.sw-skip:hover {
  color: var(--violet);
}

.sw-skip kbd {
  padding: 1px 6px;
  border: 1px solid var(--hair);
  border-radius: 5px;
  color: var(--muted);
  font: 600 0.6875rem/1.4 var(--font);
}

@media (hover: none) {
  .sw-skip kbd {
    display: none;
  }
}

@media (max-width: 560px) {
  .sw-skip {
    left: 14px;
    bottom: 14px;
  }
}

@media print {
  html.swarm main > *,
  html.swarm .sw-t {
    opacity: 1 !important;
  }

  .sw-layer,
  .sw-skip {
    display: none;
  }
}