/* Phòng xem bài chung — dùng CHO CẢ HAI trang: /phong (tạo, vào phòng) và /phong/<MÃ>
   (bàn tròn). Nạp SAU style.css, trang_chu.css, thanh_tren.css, co_bai.css.

   Lớp `ph-`. Lá nhỏ trên ghế mượn cấu trúc của co_bai.css (`.cb-xoay`, `.cb-mat`,
   `.cb-sau`, `.cb-truoc`) nhưng KHÔNG mượn `.cb-la`: lớp đó rộng 11rem và tự thở, lá
   trên ghế thì nhỏ và đứng yên.

   Chỉ động vào transform / opacity. Giảm chuyển động thì style.css đã rút mọi hoạt ảnh
   về 0; JS còn bỏ qua mọi lượt chờ. */

/* Chốt cho `hidden`, phải đứng TRƯỚC mọi rule `display` (lý do ở style.css). Trang này
   bật tắt cả chục khối theo trạng thái phòng; thiếu chốt là hỏng ngay. */
[hidden] { display: none !important; }

.ph-giua { max-width: 40rem; text-align: center; }
.ph-giua .phu { margin-left: auto; margin-right: auto; }
.ph-giua .hang-nut { justify-content: center; }

/* ── Hướng dẫn: năm bước + hai phần + hỏi nhanh (trang /phong), và khối
   «Phòng này chơi thế nào?» gập sẵn ở màn mời vào (/phong/<MÃ>). Số thứ tự vẽ bằng
   counter để vòng tròn vàng thẳng hàng, không phụ thuộc kiểu số của trình duyệt. ── */
.ph-buoc {
  list-style: none; counter-reset: buoc; max-width: 34rem; margin: 1.4rem auto 0;
  padding: 0; text-align: left;
}
.ph-buoc li {
  counter-increment: buoc; position: relative; padding: .15rem 0 .95rem 2.7rem;
  line-height: 1.55; color: var(--giay-mo);
}
.ph-buoc li::before {
  content: counter(buoc); position: absolute; left: 0; top: .05rem;
  width: 1.85rem; height: 1.85rem; display: grid; place-items: center;
  border: 1px solid rgba(216,180,92,.55); border-radius: 50%;
  color: var(--vang); font-size: .95rem;
}
.ph-buoc li:not(:last-child)::after {
  content: ""; position: absolute; left: .92rem; top: 2.1rem; bottom: .15rem;
  border-left: 1px dashed rgba(216,180,92,.25);
}
.ph-buoc b { color: var(--giay); font-weight: 500; }
.khoi .ph-tieu {
  margin: 2.4rem 0 .9rem; font-size: .82rem; font-weight: 400; letter-spacing: .16em;
  text-transform: uppercase; color: var(--vang);
}
.ph-hai-phan {
  display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; max-width: 34rem;
  margin: 0 auto; text-align: left;
}
.ph-hai-phan > div {
  padding: .9rem 1rem; background: rgba(14,19,34,.65); border: 1px solid rgba(216,180,92,.2);
}
.ph-hai-phan > div:last-child { border-color: rgba(139,111,176,.4); }
.ph-hai-phan b { display: block; color: var(--giay); font-weight: 500; margin-bottom: .3rem; }
.ph-hai-phan p { margin: 0; font-size: .92rem; line-height: 1.5; color: var(--giay-mo); }
.ph-hoi-nhanh { max-width: 34rem; margin: 0 auto; text-align: left; }
.ph-hoi-nhanh details, .ph-cach-choi { border-bottom: 1px solid rgba(216,180,92,.15); }
.ph-hoi-nhanh summary, .ph-cach-choi summary {
  cursor: pointer; list-style: none; padding: .8rem 1.6rem .8rem 0; min-height: 44px;
  position: relative; color: var(--giay-mo); line-height: 1.4;
}
.ph-hoi-nhanh summary::-webkit-details-marker,
.ph-cach-choi summary::-webkit-details-marker { display: none; }
.ph-hoi-nhanh summary::after, .ph-cach-choi summary::after {
  content: "+"; position: absolute; right: .2rem; top: .7rem; color: var(--vang);
  font-size: 1.15rem; transition: transform .3s var(--nhip);
}
.ph-hoi-nhanh details[open] summary::after,
.ph-cach-choi[open] summary::after { transform: rotate(45deg); }
.ph-hoi-nhanh summary:hover, .ph-cach-choi summary:hover,
.ph-hoi-nhanh details[open] summary, .ph-cach-choi[open] summary { color: var(--vang-sang); }
.ph-hoi-nhanh details p {
  margin: 0 0 .9rem; padding-left: .9rem; border-left: 1px solid rgba(216,180,92,.3);
  font-size: .95rem; line-height: 1.55; color: var(--giay-mo);
}
.ph-cach-choi {
  max-width: 34rem; margin: 1.6rem auto 0; text-align: left;
  border-top: 1px solid rgba(216,180,92,.15);
}
.ph-cach-choi .ph-buoc { margin-top: .6rem; }
@media (max-width: 34rem) {
  .ph-hai-phan { grid-template-columns: 1fr; }
}

/* ── Trang tạo phòng ────────────────────────────────────────────────── */
.ph-form { max-width: 34rem; margin: 1.6rem auto 0; text-align: left; }
.ph-nhan {
  display: block; margin: 1.6rem 0 .55rem; font-size: .82rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--vang);
}
.ph-form .chan-nut { text-align: center; }
.ph-kieu { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.ph-kieu button {
  position: relative; font: inherit; text-align: left; cursor: pointer;
  padding: .85rem 1rem; color: var(--giay);
  background: rgba(14,19,34,.65); border: 1px solid rgba(216,180,92,.2);
  transition: border-color .3s, background .3s, transform .3s var(--nhip);
}
.ph-kieu button:hover { border-color: rgba(216,180,92,.55); transform: translateY(-2px); }
.ph-kieu button[aria-pressed="true"] { border-color: var(--vang); background: rgba(216,180,92,.1); }
.ph-kieu b { display: block; font-weight: 500; font-size: 1.05rem; }
.ph-kieu small { display: block; font-size: .82rem; color: var(--giay-chim); line-height: 1.4; }
.ph-mua {
  display: inline-block; margin-top: .35rem; padding: .05rem .5rem; font-size: .78rem;
  color: var(--dem-sau); background: var(--than);
}

.ph-form input[type=text] {
  display: block; width: 100%; font: inherit; font-size: 1rem; color: var(--giay);
  background: rgba(8,11,20,.55); border: 1px solid rgba(216,180,92,.24);
  padding: .75rem 1rem; transition: border-color .35s, box-shadow .35s;
}
.ph-form input[type=text]:focus {
  outline: none; border-color: var(--vang);
  box-shadow: 0 0 0 3px rgba(216,180,92,.14);
}
.ph-form textarea { font-size: 1rem; }

.ph-avatar { display: grid; grid-template-columns: repeat(auto-fill, minmax(2.9rem, 1fr)); gap: .45rem; }
.ph-avatar button {
  aspect-ratio: 1; padding: 0; cursor: pointer; border-radius: 50%; overflow: hidden;
  border: 2px solid transparent; background: var(--dem-nhat);
  transition: border-color .25s, transform .25s var(--nhip);
}
.ph-avatar button:hover { transform: scale(1.07); }
.ph-avatar button[aria-pressed="true"] { border-color: var(--vang); box-shadow: 0 0 14px rgba(216,180,92,.5); }
.ph-avatar img, .ph-av img {
  display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%;
}

.ph-cong-tac {
  display: flex; gap: .7rem; align-items: flex-start; margin-top: 1.4rem; padding: .9rem 1rem;
  border: 1px solid rgba(240,231,212,.12); background: rgba(14,19,34,.5); cursor: pointer;
}
.ph-cong-tac b { display: block; font-weight: 500; }
.ph-cong-tac small { display: block; font-size: .86rem; line-height: 1.5; color: var(--giay-chim); }

.ph-kiem { margin: 1.4rem 0 .4rem; min-height: 4.2rem; }
.ph-bao {
  margin: 1rem 0; padding: .7rem .9rem; font-size: .95rem; line-height: 1.6;
  border-left: 2px solid var(--than); background: rgba(193,85,58,.08); text-align: left;
}
.ph-bao a { color: var(--vang); }
.ph-bao.on { border-color: var(--vang); background: rgba(216,180,92,.07); }

.ph-vao-ma { display: flex; gap: .6rem; max-width: 24rem; margin: 1rem auto 0; }
.ph-vao-ma input {
  flex: 1; min-width: 0; font: inherit; font-size: 1.1rem; letter-spacing: .3em;
  text-transform: uppercase; text-align: center; color: var(--giay);
  background: rgba(8,11,20,.55); border: 1px solid rgba(216,180,92,.3); padding: .6rem .8rem;
}
.ph-khung-hoang { white-space: pre-line; text-align: left; }

/* ── Bàn tròn ───────────────────────────────────────────────────────── */
.ph-dau { padding-top: calc(var(--cao-thanh, 3.6rem) + 1.6rem); padding-bottom: 0; }
.ph-dau h1 { font-size: clamp(1.6rem, 5.4vw, 2.5rem); margin-bottom: .4rem; }
.ph-ma {
  display: inline-block; font-size: .82rem; letter-spacing: .22em; color: var(--vang-sang);
  border: 1px solid rgba(216,180,92,.45); padding: .1rem .7rem; margin-top: .3rem;
}
.ph-cau { font-style: italic; color: var(--giay-mo); margin: .6rem auto 0; max-width: 36ch; }

.ph-ban {
  --la: clamp(2.5rem, 9.5vw, 4.3rem);
  position: relative; width: min(94vw, 36rem, calc(100svh - 9rem)); min-width: min(94vw, 20rem);
  aspect-ratio: 1; margin: .4rem auto 0;
}
/* Năm người trở lên: lá nhỏ lại. Bảy, tám người: khung bàn dài ra theo chiều dọc, vì
   ghế hai bên xếp chồng lên nhau theo chiều cao (lá + tên + danh hiệu). Đo trên ảnh chụp
   phòng tám người: để nguyên cỡ thì lá ghế này đè lên danh hiệu ghế kế bên. */
.ph-ban[data-so="5"], .ph-ban[data-so="6"] { --la: clamp(2.3rem, 8.2vw, 3.6rem); }
.ph-ban[data-so="7"], .ph-ban[data-so="8"] {
  --la: clamp(2.1rem, 7.2vw, 3.1rem); aspect-ratio: 1 / 1.16;
}
.ph-ban[data-so="7"] .ph-danh, .ph-ban[data-so="8"] .ph-danh { font-size: .78rem; }
.ph-mam {
  position: absolute; inset: 15%; border-radius: 50%;
  background: radial-gradient(circle at 50% 38%, #24305a, var(--dem-nhat) 48%, #0b0f1d 100%);
  box-shadow: 0 0 0 2px var(--vang-toi), 0 0 0 8px #0a0e19, 0 0 0 9px rgba(216,180,92,.45),
              0 30px 60px rgba(0,0,0,.55), inset 0 0 70px rgba(0,0,0,.55);
}
.ph-mam::before {
  content: ""; position: absolute; inset: 13%; border-radius: 50%;
  border: 1px solid rgba(216,180,92,.22);
}
.ph-mam::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%; pointer-events: none;
  background:
    radial-gradient(circle at 50% 50%, rgba(216,180,92,.18) 0 1px, transparent 1px) 0 0/22px 22px;
  opacity: .5;
}
.ph-bung { position: absolute; inset: 15%; border-radius: 50%; pointer-events: none; opacity: 0; }
.ph-bung.chay { animation: ph-bung 1.2s ease-out; }
@keyframes ph-bung {
  0% { opacity: .9; box-shadow: 0 0 0 0 rgba(242,220,160,.9); }
  100% { opacity: 0; box-shadow: 0 0 0 80px rgba(242,220,160,0); }
}

/* Cỗ bài giữa mâm. Xáo bằng hai nhịp xen kẽ, như cỗ ở co_bai.css nhưng nhỏ. */
.ph-coc {
  position: absolute; left: 50%; top: 50%; width: var(--la); aspect-ratio: 11 / 19;
  translate: -50% -50%;
}
.ph-coc span {
  position: absolute; inset: 0; border: 1px solid rgba(216,180,92,.5);
  background: linear-gradient(150deg, #16203a, #0b1020 60%, #131b31);
  box-shadow: 0 6px 14px -8px #000;
  translate: calc(var(--i) * -.7px) calc(var(--i) * -1px);
}
.ph-coc.xao span:nth-child(odd)  { animation: ph-xao-t .62s cubic-bezier(.5,0,.3,1) 3 both; }
.ph-coc.xao span:nth-child(even) { animation: ph-xao-p .62s cubic-bezier(.5,0,.3,1) 3 both; }
.ph-coc.xao span { animation-delay: calc(var(--i) * 30ms); }
@keyframes ph-xao-t { 50% { transform: translateX(-72%) rotate(-12deg); } }
@keyframes ph-xao-p { 50% { transform: translateX(72%) rotate(12deg); } }

/* Ghế. JS đặt left/top theo góc: người xem luôn ở chính giữa phía dưới. */
.ph-ghe {
  position: absolute; display: flex; flex-direction: column; align-items: center; gap: .3rem;
  translate: -50% -50%; width: calc(var(--la) * 2.15);
  transition: left .5s var(--nhip), top .5s var(--nhip);
  animation: ph-vao-ghe .4s var(--nhip) both;
}
@keyframes ph-vao-ghe { from { opacity: 0; scale: .6; } }
.ph-o {
  position: relative; width: var(--la); aspect-ratio: 11 / 19;
  border: 1px dashed rgba(216,180,92,.35);
}
.ph-o.co-la { border-color: transparent; }

.ph-la { position: absolute; inset: 0; perspective: 600px; }
.ph-la .cb-mat { border-width: 1px; box-shadow: 0 8px 18px -10px #000; }
.ph-la .cb-hoa::after { width: 42%; height: auto; aspect-ratio: 1; margin: 0; translate: -50% -50%; }
.ph-la .cb-xoay { transition: transform .95s cubic-bezier(.3, 1.25, .45, 1); }
.ph-la.lat-roi .cb-xoay { transform: rotateY(180deg); }
.ph-la.tuc-thi .cb-xoay { transition: none; }
.ph-la .cb-truoc img { position: absolute; inset: 0; }
.ph-la.nguoc .cb-truoc img { transform: rotate(180deg); }
/* Tên lá nằm DƯỚI ảnh: ảnh chưa kịp về lúc lật thì vẫn đọc được tên, không lật ra
   một ô trống. Mọi máy lật cùng lúc nên không được chờ ảnh. */
.ph-ten-la {
  position: absolute; inset: 0; display: grid; place-items: center; padding: .2rem;
  font-size: .78rem; line-height: 1.1; text-align: center; color: var(--dem-sau); overflow: hidden;
  background: var(--giay);
}
.ph-la.lat-roi::after {
  content: ""; position: absolute; inset: -4px; pointer-events: none;
  box-shadow: 0 0 0 1px rgba(216,180,92,.8), 0 0 26px 4px rgba(216,180,92,.5);
  animation: ph-loe 1.4s .45s ease-out both;
}
.ph-la.tuc-thi::after { animation: none; opacity: 0; }
@keyframes ph-loe { 0% { opacity: 0; } 30% { opacity: 1; } 100% { opacity: 0; } }

.ph-ai {
  position: relative; display: flex; align-items: center; gap: .35rem; max-width: 100%;
  font-size: .8rem; line-height: 1.2; white-space: nowrap;
  padding: .15rem .55rem .15rem .15rem; border-radius: 999px;
  background: rgba(8,11,20,.88); border: 1px solid rgba(216,180,92,.32);
}
.ph-ai > span { overflow: hidden; text-overflow: ellipsis; }
.ph-ghe.toi .ph-ai { border-color: var(--vang-sang); }
.ph-ghe.dang-chon .ph-av { animation: ph-nhip 1.1s ease-in-out infinite; }
@keyframes ph-nhip { 50% { box-shadow: 0 0 0 4px rgba(242,220,160,.35); } }
.ph-av {
  flex: none; width: 1.45rem; height: 1.45rem; border-radius: 50%; overflow: hidden;
  background: var(--dem-nhat);
}
.ph-ghe.vang .ph-av { filter: grayscale(1) brightness(.6); }
.ph-chu { color: var(--vang); font-size: .78rem; }
.ph-moi-ra {
  flex: none; width: 1.4rem; height: 1.4rem; margin-left: .1rem; padding: 0; cursor: pointer;
  font: inherit; font-size: .9rem; line-height: 1; color: var(--giay-chim);
  background: none; border: 1px solid rgba(240,231,212,.2); border-radius: 50%;
}
.ph-moi-ra:hover { color: var(--than); border-color: var(--than); }
.ph-rut-giup {
  font: inherit; font-size: .78rem; cursor: pointer; padding: .1rem .5rem;
  color: var(--dem-sau); background: var(--vang); border: 0;
}
.ph-danh {
  max-width: calc(var(--la) * 2.4); font-size: .82rem; line-height: 1.2; text-align: center;
  min-height: 2.4em;      /* giữ chỗ: danh hiệu hiện ra không làm ghế cao lên rồi nhảy chỗ */
  color: var(--vang-sang); opacity: 0; translate: 0 -6px;
  transition: opacity .45s, translate .45s var(--nhip);
}
.ph-danh.hien { opacity: 1; translate: 0 0; }

/* Lá bay từ quạt (hoặc từ cỗ) về ghế: một bản sao `position: fixed`. */
.ph-bay {
  position: fixed; z-index: 40; pointer-events: none; aspect-ratio: 11 / 19;
  border: 1px solid rgba(216,180,92,.6);
  background: linear-gradient(150deg, #16203a, #0b1020 60%, #131b31);
  box-shadow: 0 14px 30px -12px #000;
}

/* Emoji bay lên từ ghế người thả. */
.ph-emoji-bay {
  position: absolute; z-index: 5; pointer-events: none; font-size: 1.6rem; translate: -50% -50%;
  animation: ph-emoji 1.8s ease-out both;
}
@keyframes ph-emoji {
  0% { opacity: 0; transform: translateY(0) scale(.5); }
  15% { opacity: 1; transform: translateY(-.6rem) scale(1.15); }
  100% { opacity: 0; transform: translateY(-4.6rem) scale(1); }
}

/* ── Bảng dưới bàn ──────────────────────────────────────────────────── */
.ph-duoi { max-width: 40rem; margin: 0 auto; padding: 0 1.2rem 3rem; text-align: center; }
.ph-trang-thai { min-height: 1.7rem; margin: .4rem 0 .9rem; color: var(--giay-mo); }
.ph-xem-ds { font-size: .86rem; color: var(--giay-chim); margin: 0 0 .8rem; }
.ph-moi {
  margin: 1.2rem auto; padding: 1rem; max-width: 30rem;
  border: 1px solid rgba(216,180,92,.22); background: rgba(14,19,34,.55);
}
.ph-moi p { margin: 0 0 .6rem; font-size: .92rem; color: var(--giay-mo); }
.ph-moi input {
  width: 100%; font: inherit; font-size: .85rem; color: var(--giay-chim); text-align: center;
  background: rgba(8,11,20,.75); border: 1px solid rgba(216,180,92,.2); padding: .5rem;
}
.ph-moi .hang-nut { justify-content: center; margin-top: .6rem; }

.ph-emoji { display: flex; gap: .35rem; justify-content: center; flex-wrap: wrap; margin: .6rem 0 1rem; }
.ph-emoji button {
  width: 2.6rem; height: 2.6rem; padding: 0; cursor: pointer; font-size: 1.25rem;
  background: rgba(14,19,34,.6); border: 1px solid rgba(240,231,212,.12); border-radius: 50%;
  transition: transform .2s var(--nhip), border-color .2s;
}
.ph-emoji button:hover { transform: translateY(-2px) scale(1.08); border-color: var(--vang); }
.ph-emoji button:active { transform: scale(.92); }

/* Quạt 22 lá: nằm đáy màn khi tới lượt bạn chọn. */
.ph-quat {
  --lq: clamp(3rem, 12vw, 4.4rem);
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; overflow: hidden;
  height: calc(var(--lq) * 1.727 * 1.1 + 3.2rem + env(safe-area-inset-bottom, 0px));
  background: rgba(8,11,20,.97);
  box-shadow: 0 -1.6rem 2.4rem rgba(8,11,20,.85);
  border-top: 1px solid rgba(216,180,92,.25);
  animation: ph-quat-vao .45s var(--nhip) both;
}
@keyframes ph-quat-vao { from { opacity: 0; transform: translateY(2rem); } }
.ph-quat p {
  position: absolute; left: 0; right: 0; top: .5rem; margin: 0; text-align: center;
  font-size: 1.05rem; color: var(--vang-sang);
}
.ph-quat button {
  position: absolute; left: 50%; bottom: calc(var(--lq) * -.28 + env(safe-area-inset-bottom, 0px));
  width: var(--lq); aspect-ratio: 11 / 19; padding: 0; cursor: pointer;
  border: 1px solid rgba(216,180,92,.55);
  background: linear-gradient(150deg, #16203a, #0b1020 60%, #131b31);
  box-shadow: 0 8px 16px -8px #000;
  transform-origin: 50% 520%;   /* tâm quay xa: cung dẹt, trải hết bề ngang */
  transform: translateX(-50%) rotate(var(--g));
  transition: transform .25s var(--nhip), opacity .3s;
}
.ph-quat button::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 40%; aspect-ratio: 1;
  translate: -50% -50%; border-radius: 50%; border: 1px solid rgba(216,180,92,.5);
}
.ph-quat button:hover, .ph-quat button:focus-visible, .ph-quat button.nhac {
  transform: translateX(-50%) rotate(var(--g)) translateY(-14px);
  outline: none; border-color: var(--vang-sang);
}
.ph-quat button.nhac { transform: translateX(-50%) rotate(var(--g)) translateY(-26px); box-shadow: 0 0 22px rgba(242,220,160,.6); }
.ph-quat button:disabled { opacity: .18; cursor: default; transform: translateX(-50%) rotate(var(--g)); }

/* Đếm ngược tới đúng `revealAt` của máy chủ. */
.ph-dem {
  position: fixed; inset: 0; z-index: 35; display: grid; place-items: center; pointer-events: none;
}
.ph-dem span {
  font-size: min(38vw, 13rem); line-height: 1; color: var(--vang-sang);
  text-shadow: 0 0 40px rgba(216,180,92,.6);
  animation: ph-tich .8s var(--nhip) both;
}
@keyframes ph-tich { from { opacity: 0; transform: scale(1.6); } to { opacity: .95; transform: none; } }

/* ── Kết quả ────────────────────────────────────────────────────────── */
.ph-kq { max-width: 40rem; margin: 0 auto; padding: 0 1.2rem 4rem; text-align: left; }
.ph-kq h2 { font-weight: normal; font-size: 1.6rem; margin: 2.2rem 0 .8rem; color: var(--vang-sang); }
.ph-kq p { line-height: 1.75; }
.ph-rieng {
  display: grid; grid-template-columns: 9rem 1fr; gap: 1.3rem; align-items: start;
  padding: 1.2rem; border: 1px solid rgba(216,180,92,.25); background: rgba(14,19,34,.6);
}
.ph-rieng img { display: block; width: 100%; border: 1px solid rgba(216,180,92,.4); }
.ph-rieng img.nguoc { transform: rotate(180deg); }
.ph-rieng h3 { margin: 0 0 .2rem; font-weight: 500; font-size: 1.25rem; }
.ph-rieng .ph-danh-lon { margin: 0 0 .8rem; color: var(--vang-sang); font-size: 1.05rem; }
.ph-rieng ul { margin: .3rem 0 .8rem; padding-left: 1.1rem; font-size: .95rem; color: var(--giay-mo); }
.ph-nho { font-size: .86rem; color: var(--giay-chim); }
.ph-cho {
  display: flex; gap: .7rem; align-items: center; justify-content: center; margin: 1.4rem 0;
  color: var(--giay-mo);
}
.ph-cho i {
  width: .5rem; height: .5rem; border-radius: 50%; background: var(--vang);
  animation: ph-cham 1.2s ease-in-out infinite;
}
.ph-cho i:nth-child(2) { animation-delay: .2s; }
.ph-cho i:nth-child(3) { animation-delay: .4s; }
@keyframes ph-cham { 50% { opacity: .2; transform: translateY(-4px); } }
.ph-nhom-van { padding: 1rem 1.2rem; border-left: 2px solid var(--vang); background: rgba(216,180,92,.06); }
.ph-ca-ban { list-style: none; padding: 0; margin: 0; display: grid; gap: .8rem; }
.ph-ca-ban li {
  display: grid; grid-template-columns: 3.4rem 1fr; gap: .9rem; align-items: start;
  padding: .8rem; border: 1px solid rgba(240,231,212,.1); background: rgba(14,19,34,.45);
}
.ph-ca-ban img { display: block; width: 100%; border: 1px solid rgba(216,180,92,.35); }
.ph-ca-ban img.nguoc { transform: rotate(180deg); }
.ph-ca-ban b { font-weight: 500; }
.ph-ca-ban .ph-danh-nho { display: block; color: var(--vang-sang); font-size: .95rem; }
.ph-ca-ban p { margin: .3rem 0 0; font-size: .95rem; color: var(--giay-mo); line-height: 1.6; }
.ph-ca-ban li.lan-luot { animation: cb-hien .55s var(--nhip) both; animation-delay: calc(var(--i, 0) * 160ms); }

/* Phòng đã lưu (trang /phong). */
.ph-da-luu { list-style: none; padding: 0; margin: 1.2rem 0 0; display: grid; gap: 1rem; text-align: left; }
.ph-da-luu > li {
  padding: 1rem 1.1rem; border: 1px solid rgba(216,180,92,.22); background: rgba(14,19,34,.6);
}
.ph-da-luu .ph-dau-luu { display: flex; justify-content: space-between; gap: .8rem; align-items: baseline; flex-wrap: wrap; }
.ph-da-luu .ph-dau-luu b { font-weight: 500; }
.ph-da-luu .ph-ngay { font-size: .82rem; color: var(--giay-chim); }
.ph-da-luu .ph-danh-lon { margin: 0 0 .6rem; color: var(--vang-sang); }
.ph-da-luu .ph-cau { margin: .3rem 0 .8rem; font-size: .98rem; }
.ph-da-luu details { margin-top: .7rem; }
.ph-da-luu summary { cursor: pointer; color: var(--vang); font-size: .95rem; padding: .3rem 0; }
.ph-da-luu .ph-ca-ban { margin-top: .6rem; }
.ph-xoa-luu {
  font: inherit; font-size: .82rem; cursor: pointer; margin-top: .8rem; padding: .3rem .7rem;
  color: var(--giay-chim); background: none; border: 1px solid rgba(240,231,212,.18);
}
.ph-xoa-luu:hover { color: var(--than); border-color: var(--than); }

@media (max-width: 34rem) {
  .ph-kieu { grid-template-columns: 1fr; }
  .ph-rieng { grid-template-columns: 1fr; }
  .ph-rieng img { max-width: 10rem; margin: 0 auto; }
  .ph-ai { font-size: .78rem; }
  .ph-danh { font-size: .78rem; }
  .ph-bay, .ph-quat, .ph-dem { position: fixed; }
}

/* ── Các trò trong phòng (UPDATE 2, phong_hd.js) ───────────────────── */
.ph-tro { max-width: 46rem; margin: 2.4rem auto 0; padding: 0 1.1rem; }
.ph-tro h2 { text-align: center; }
.ph-hd {
  margin-top: 1.4rem; padding: 1.2rem 1.2rem 1rem;
  background: rgba(14,19,34,.72); border: 1px solid rgba(216,180,92,.28);
  box-shadow: 0 0 40px rgba(216,180,92,.07);
}
.ph-hd.hien { animation: ph-hd-vao .5s var(--nhip) both; }
@keyframes ph-hd-vao { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.ph-hd-dau { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.ph-hd-dau h2 { margin: 0; text-align: left; font-size: 1.25rem; }
.ph-hd-dem { font-variant-numeric: tabular-nums; color: var(--giay-mo); font-size: .9rem; }
.ph-hd-dem.gap { color: var(--than); }
.ph-hd-than { margin-top: .8rem; }
.ph-hd-cuoi { justify-content: flex-end; margin-top: 1rem; }
.ph-ket { color: var(--vang-sang); font-size: 1.08rem; margin: .8rem 0; }
.ph-ket.lon { font-size: 1.35rem; text-align: center; }

.ph-thuc-don { list-style: none; padding: 0; display: grid; gap: .9rem;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); }
.ph-the-tro {
  padding: 1rem 1.1rem; background: rgba(14,19,34,.6); border: 1px solid rgba(216,180,92,.2);
  transition: border-color .3s, transform .3s var(--nhip);
}
.ph-the-tro:hover { border-color: rgba(216,180,92,.5); transform: translateY(-2px); }
.ph-the-tro b { display: block; font-weight: 500; font-size: 1.1rem; color: var(--vang-sang); }
.ph-the-tro p { margin: .35rem 0; font-size: .95rem; }
.ph-the-tro small { display: block; color: var(--giay-chim); font-size: .82rem; }
.ph-the-tro .hang-nut { margin-top: .7rem; align-items: center; }
.ph-de-xuat { font-size: .85rem; color: var(--vang); }

.ph-goi-y { display: flex; flex-wrap: wrap; gap: .45rem; margin: .7rem 0; }
.ph-chip {
  font: inherit; font-size: .9rem; cursor: pointer; padding: .4rem .75rem; text-align: left;
  color: var(--giay); background: rgba(8,11,20,.5); border: 1px solid rgba(216,180,92,.22);
  transition: border-color .25s, background .25s;
}
.ph-chip:hover, .ph-chip[aria-pressed="true"] { border-color: var(--vang); background: rgba(216,180,92,.1); }
.ph-o-go { display: flex; gap: .5rem; flex-wrap: wrap; margin: .8rem 0; }
.ph-o-go input, #pp-gui-loi, .ph-chat-form input {
  flex: 1 1 12rem; min-width: 0; font: inherit; font-size: 1rem; color: var(--giay);
  background: rgba(8,11,20,.6); border: 1px solid rgba(216,180,92,.24); padding: .6rem .8rem;
}
.ph-o-go input:focus, #pp-gui-loi:focus, .ph-chat-form input:focus {
  outline: none; border-color: var(--vang); box-shadow: 0 0 0 3px rgba(216,180,92,.14);
}
#pp-gui-loi { display: block; width: 100%; }
.ph-ds-cau, .ph-phieu { list-style: none; padding: 0; margin: .6rem 0; display: grid; gap: .45rem; }
.ph-ds-cau li { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.ph-ds-cau small, .ph-phieu small { color: var(--giay-chim); font-size: .82rem; white-space: nowrap; }
.ph-phieu li { display: flex; gap: .7rem; align-items: center; }
.ph-phieu.nguoi { grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); }
.ph-lua-chon {
  flex: 1; font: inherit; text-align: left; cursor: pointer; padding: .6rem .85rem;
  color: var(--giay); background: rgba(8,11,20,.5); border: 1px solid rgba(216,180,92,.22);
  transition: border-color .25s, background .25s, transform .25s var(--nhip);
}
.ph-lua-chon:hover:not(:disabled) { border-color: rgba(216,180,92,.6); transform: translateX(3px); }
.ph-lua-chon[aria-pressed="true"] { border-color: var(--vang); background: rgba(216,180,92,.14); }
.ph-lua-chon.thang { border-color: var(--vang-sang); background: rgba(216,180,92,.22);
  box-shadow: 0 0 22px rgba(216,180,92,.25); }
.ph-lua-chon:disabled { cursor: default; }

.ph-la-mot { display: grid; grid-template-columns: 7rem 1fr; gap: 1rem; align-items: start; margin: .6rem 0; }
.ph-la-mot.nho { grid-template-columns: 3.4rem 1fr; }
.ph-la-mot img { width: 100%; border-radius: 4px; box-shadow: 0 6px 20px rgba(0,0,0,.45); }
.ph-la-mot img.nguoc { transform: rotate(180deg); }
.ph-la-mot h3 { margin: 0 0 .35rem; font-size: 1.1rem; }
.ph-la-mot p { margin: .3rem 0; }
.ph-the-thu {
  margin: .8rem auto; max-width: 30rem; padding: 1.2rem; text-align: center; font-size: 1.2rem;
  color: var(--vang-sang); border: 1px dashed rgba(216,180,92,.5); background: rgba(216,180,92,.06);
}
.ph-tu-ta { padding-left: 1.4rem; margin: .6rem 0; }
.ph-tu-ta li { margin: .2rem 0; }
.ph-tu-ta b { font-weight: 500; margin-right: .5rem; }
.ph-tu-ta span { color: var(--vang-sang); }
.ph-tu-ta span.bo { color: var(--giay-chim); font-style: italic; }
.ph-tu-ta small { margin-left: .5rem; color: var(--giay-chim); }
.ph-hai-la { display: flex; justify-content: center; gap: 1.4rem; margin: 1rem 0; }
.ph-hai-la figure { margin: 0; width: 7.5rem; text-align: center; }
.ph-hai-la img { width: 100%; border-radius: 4px; }
.ph-hai-la figcaption { font-size: .88rem; margin-top: .3rem; }
.ph-giai-thich { text-align: center; max-width: 34rem; margin: .4rem auto 1rem; }

/* Ghế đang tới lượt / bị kim chỉ / là gián điệp. */
.ph-ghe.ph-luot .ph-av { box-shadow: 0 0 0 3px var(--vang), 0 0 24px rgba(216,180,92,.6); }
.ph-ghe.ph-gian .ph-av { box-shadow: 0 0 0 3px var(--than), 0 0 24px rgba(193,85,58,.6); }

/* Kim của vòng quay: thanh vàng từ tâm mâm, mũi chỉ sang phải ở góc 0. */
.ph-kim {
  position: absolute; left: 50%; top: 50%; z-index: 4; width: 34%; height: 1.4rem;
  transform: translate(-50%, -50%); pointer-events: none;
}
.ph-kim::before {
  content: ""; position: absolute; left: 50%; top: 50%; width: 50%; height: .5rem;
  transform: translateY(-50%); border-radius: 0 4px 4px 0;
  background: linear-gradient(90deg, rgba(216,180,92,.2), var(--vang-sang));
  box-shadow: 0 0 14px rgba(216,180,92,.6);
}
.ph-kim::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 1.3rem; height: 1.3rem;
  transform: translate(-50%, -50%); border-radius: 50%;
  background: radial-gradient(circle, var(--vang-sang), var(--vang-toi));
}

/* Lá gửi bay qua bàn. */
.ph-la-bay {
  position: absolute; z-index: 6; width: 3rem; border-radius: 3px; pointer-events: none;
  box-shadow: 0 0 18px rgba(216,180,92,.55);
}
.ph-gui-ds { list-style: none; padding: 0; display: grid; gap: .7rem; }
.ph-gui-ds li { display: grid; grid-template-columns: 2.8rem 1fr auto; gap: .8rem; align-items: start; }
.ph-gui-ds img { width: 100%; border-radius: 3px; }
.ph-gui-ds b { font-weight: 500; }
.ph-gui-ds p { margin: .2rem 0; font-style: italic; }
.ph-gui-ds small { color: var(--giay-chim); font-size: .82rem; }
.ph-gui-ds .ph-chan { color: var(--than); }
.ph-an {
  font: inherit; font-size: .8rem; cursor: pointer; padding: .2rem .6rem; color: var(--giay-chim);
  background: none; border: 1px solid rgba(240,231,212,.18);
}

.ph-luoi-la {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(4.2rem, 1fr)); gap: .45rem;
  max-height: 16rem; overflow-y: auto; padding: .2rem;
}
.ph-luoi-la button {
  font: inherit; cursor: pointer; padding: .25rem; color: var(--giay); text-align: center;
  background: rgba(8,11,20,.5); border: 1px solid transparent; transition: border-color .2s;
}
.ph-luoi-la button[aria-pressed="true"], .ph-luoi-la button:hover { border-color: var(--vang); }
.ph-luoi-la img { width: 100%; display: block; border-radius: 2px; }
.ph-luoi-la span { display: block; font-size: .78rem; line-height: 1.2; margin-top: .2rem; }

/* Hộp nổi: gửi lá, văn bản khủng hoảng. */
.ph-hop {
  position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 1rem;
  background: rgba(4,6,12,.78); backdrop-filter: blur(3px);
}
.ph-hop-trong {
  width: 100%; max-width: 34rem; max-height: 92svh; overflow-y: auto; padding: 1.3rem;
  background: var(--dem); border: 1px solid rgba(216,180,92,.35);
}
.ph-hop-trong h2 { margin-top: 0; }
.ph-kh-van { white-space: pre-line; font-size: 1.05rem; line-height: 1.6; }

/* Chat: nút nổi góc dưới phải, bung thành hộp. */
.ph-chat { position: fixed; right: 1rem; bottom: 1rem; z-index: 40; display: flex;
  flex-direction: column; align-items: flex-end; gap: .5rem; }
.ph-chat-mo {
  font: inherit; cursor: pointer; padding: .55rem 1rem; color: var(--dem-sau);
  background: var(--vang); border: none; box-shadow: 0 4px 18px rgba(0,0,0,.4);
}
.ph-chat-mo b {
  display: inline-block; min-width: 1.3rem; margin-left: .35rem; padding: 0 .3rem;
  font-size: .78rem; color: var(--giay); background: var(--than); border-radius: 1rem;
}
.ph-chat-hop {
  order: -1; width: min(22rem, calc(100vw - 2rem)); padding: .7rem;
  background: var(--dem); border: 1px solid rgba(216,180,92,.35); box-shadow: 0 10px 40px rgba(0,0,0,.55);
}
.ph-chat-ds { list-style: none; margin: 0; padding: 0; max-height: 18rem; overflow-y: auto; }
.ph-chat-ds li { margin: .35rem 0; font-size: .95rem; overflow-wrap: anywhere; }
.ph-chat-ds li b { font-weight: 500; color: var(--vang); margin-right: .4rem; }
.ph-chat-ds li.toi b { color: var(--vang-sang); }
.ph-sticker { display: inline-flex; align-items: center; gap: .4rem; vertical-align: middle; }
.ph-sticker img { width: 2.2rem; border-radius: 2px; }
.ph-sticker small { color: var(--giay-mo); font-size: .82rem; }
.ph-chat-form { display: flex; gap: .4rem; margin-top: .5rem; }
.ph-chat-form .nut-chinh, .ph-chat-form .nut-phu { padding: .5rem .7rem; }
.ph-chat-cuoi { margin: .4rem 0 0; text-align: right; }
.ph-chat .ph-luoi-la { max-height: 11rem; margin-top: .5rem; }

@media (max-width: 34rem) {
  .ph-thuc-don { grid-template-columns: 1fr; }
  .ph-la-mot { grid-template-columns: 5rem 1fr; }
  .ph-hai-la figure { width: 6rem; }
  .ph-chat { right: .6rem; bottom: .6rem; position: fixed; }
  .ph-chat-mo { font-size: .9rem; padding: .4rem .8rem; }
  .ph-hop { position: fixed; padding: .5rem; }
  .ph-hop-trong { padding: 1rem; }
  .ph-chat-form { flex-wrap: wrap; }
}

/* ── Các trò có AI (UPDATE 2 đợt B, phong_hd_ai.js) ───────────────────── */
.ph-luot-ai { margin-top: 2rem; }
.ph-luot-ai-thanh {
  display: flex; align-items: center; justify-content: space-between; gap: .8rem; flex-wrap: wrap;
  padding: .7rem 1rem; border: 1px solid rgba(216,180,92,.3);
  background: linear-gradient(90deg, rgba(216,180,92,.1), rgba(14,19,34,.6));
}
.ph-luot-ai-thanh p { margin: 0; color: var(--vang-sang); font-size: 1.05rem; }
.ph-luot-ai h3, .ph-da-tieu-de { font-size: 1.1rem; margin: 1.6rem 0 .3rem; color: var(--vang-sang); font-weight: 500; }
.ph-muon, .ph-hai { margin-top: 1rem; }

.ph-la-nho { margin: 0; text-align: center; }
.ph-la-nho img { width: 5.2rem; border-radius: 4px; box-shadow: 0 6px 18px rgba(0,0,0,.45); }
.ph-la-nho img.nguoc { transform: rotate(180deg); }
.ph-la-nho figcaption { font-size: .86rem; margin-top: .35rem; color: var(--giay-mo); }

.ph-ghe-la { display: grid; gap: .9rem; margin: 1rem 0;
  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); }
.ph-ghe-o { padding: .7rem; background: rgba(8,11,20,.45); border: 1px solid rgba(216,180,92,.16);
  animation: ph-hd-vao .6s var(--nhip) both; }
.ph-ghe-o:nth-child(2) { animation-delay: .08s; } .ph-ghe-o:nth-child(3) { animation-delay: .16s; }
.ph-ghe-o:nth-child(4) { animation-delay: .24s; } .ph-ghe-o:nth-child(5) { animation-delay: .32s; }
.ph-ghe-o:nth-child(n+6) { animation-delay: .4s; }
.ph-ghe-o p { font-size: .92rem; margin: .5rem 0 0; }
.ph-chan-dung {
  margin: 1.2rem 0; padding: 1.2rem 1.3rem; text-align: left;
  border: 1px solid rgba(216,180,92,.45); background: rgba(216,180,92,.07);
  box-shadow: 0 0 34px rgba(216,180,92,.12);
}
.ph-danh-hieu { margin: 0 0 .6rem; text-align: center; font-size: 1.35rem; color: var(--vang-sang);
  letter-spacing: .02em; }

.ph-dau-ti { align-items: center; }
.ph-dau-ti .ph-la-nho img { width: 6.6rem; }
.ph-vs { font-size: 1.1rem; color: var(--than); text-transform: uppercase; letter-spacing: .12em; }
.ph-dau-ti figure.thang img { box-shadow: 0 0 0 3px var(--vang-sang), 0 0 30px rgba(216,180,92,.55); }
.ph-dau-ti figure.thua { opacity: .72; }
.ph-tran-dau, .ph-tra-loi { font-size: 1.02rem; line-height: 1.65; margin: .8rem 0; }
.ph-tran-dau { padding-left: .9rem; border-left: 2px solid rgba(216,180,92,.45); }

.ph-hoi-dap, .ph-bi-mat { padding: .9rem 1rem; margin: .7rem 0; background: rgba(8,11,20,.4);
  border: 1px solid rgba(216,180,92,.14); }
.ph-hoi-dap.hien, .ph-bi-mat.hien { border-color: rgba(216,180,92,.4); }
.ph-hoi-dap .ph-la-nho, .ph-bi-mat .ph-la-nho { float: right; margin: 0 0 .5rem .9rem; }
.ph-hoi-dap::after, .ph-bi-mat::after { content: ""; display: block; clear: both; }
.ph-cau-hoi { font-size: 1.05rem; color: var(--vang-sang); margin: .2rem 0 .5rem; }
.ph-doan-ket { list-style: none; padding: 0; margin: .6rem 0; display: grid; gap: .3rem;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr)); }
.ph-doan-ket li { display: flex; justify-content: space-between; gap: .5rem; padding: .3rem .6rem;
  border: 1px solid rgba(216,180,92,.16); font-size: .9rem; }
.ph-doan-ket li.dung { border-color: var(--vang-sang); background: rgba(216,180,92,.14); }
.ph-doan-ket small { color: var(--giay-chim); }

.ph-muon-ds, .ph-hai-ds { list-style: none; padding: 0; margin: .7rem 0; display: grid; gap: .6rem; }
.ph-muon-ds li, .ph-hai-ds li { padding: .7rem .9rem; background: rgba(8,11,20,.4);
  border: 1px solid rgba(216,180,92,.14); }
.ph-muon-ds b { font-weight: 500; color: var(--vang-sang); }
.ph-muon-ds p { margin: .4rem 0 0; }
.ph-muon-ds small, .ph-hai-hang small { display: block; color: var(--giay-chim); font-size: .85rem; }
.ph-hai-ds li.da-tra { border-color: rgba(216,180,92,.4); }
.ph-hai-ds .ph-cau-hoi { margin: 0; }
.ph-hai-hang { display: flex; align-items: center; justify-content: space-between; gap: .6rem; margin: .4rem 0 0; }
.ph-cong {
  font: inherit; font-size: .9rem; cursor: pointer; padding: .3rem .7rem; min-height: 2.2rem;
  color: var(--giay); background: rgba(8,11,20,.5); border: 1px solid rgba(216,180,92,.3);
  transition: border-color .25s, background .25s, transform .2s var(--nhip);
}
.ph-cong:hover:not(:disabled) { border-color: var(--vang); transform: translateY(-1px); }
.ph-cong[aria-pressed="true"] { border-color: var(--vang); background: rgba(216,180,92,.18); color: var(--vang-sang); }
.ph-cong:disabled { cursor: default; opacity: .65; }
.ph-chan { color: var(--than); }

/* ── Đợt C: truyện, chòm sao, bạn đồng hành, nhà chung (dùng chung cho bàn tròn và
   trang /nha-chung/<mã>). ───────────────────────────────────────────────── */
.ph-ds-hoi { list-style: none; padding: 0; margin: .8rem 0; display: grid; gap: .5rem; }
.ph-ds-hoi a { font-size: 1.05rem; }
.ph-nga-ds { display: grid; gap: .45rem; margin: .7rem 0; }
.ph-ten-truyen { margin: .4rem 0 .6rem; font-size: 1.25rem; color: var(--vang-sang); }
.ph-truyen p { margin: 0 0 .8rem; font-size: 1.02rem; line-height: 1.75; }
.ph-nga-chon { font-size: .88rem; color: var(--vang); padding-left: .8rem;
  border-left: 2px solid rgba(216,180,92,.5); }
.ph-truyen-thuyet { font-style: italic; color: var(--giay-mo); line-height: 1.7; }

.ph-bau-troi { margin: .8rem auto; max-width: 34rem; border: 1px solid rgba(216,180,92,.18);
  background: radial-gradient(ellipse at 50% 35%, rgba(60,70,120,.35), rgba(6,8,16,.85) 70%); }
.ph-bau-troi svg, .nc-chom svg { display: block; width: 100%; height: auto; }
.ph-duong { stroke: rgba(242,220,160,.55); stroke-width: .45; stroke-linecap: round; }
.ph-duong.cua-toi { stroke: var(--vang-sang); stroke-width: .7; }
.ph-sao circle { fill: var(--vang-sang); }
.ph-sao .ph-sao-quang { fill: rgba(242,220,160,.12); }
/* Viền tối quanh chữ: đường nối chạy ngang qua tên sao thì chữ vẫn đọc được. */
.ph-sao text { fill: var(--giay); font-size: 2.6px; paint-order: stroke;
  stroke: rgba(6,8,16,.92); stroke-width: .9px; stroke-linejoin: round; }
.ph-sao text.ph-sao-la { fill: var(--giay-mo); font-size: 2.1px; }
.ph-bau-troi .ph-sao[tabindex="0"] { cursor: pointer; }
.ph-bau-troi .ph-sao[tabindex="0"]:hover .ph-sao-quang,
.ph-bau-troi .ph-sao[tabindex="0"]:focus .ph-sao-quang { fill: rgba(242,220,160,.3); }
.ph-bau-troi .ph-sao:focus { outline: none; }
.ph-sao.chon .ph-sao-quang { fill: rgba(242,220,160,.45); }
.ph-ten-ds { list-style: none; padding: 0; margin: .6rem 0; display: grid; gap: .3rem; }
.ph-ten-ds small { color: var(--giay-chim); font-size: .85rem; }

.ph-dong-hanh, .nc-dong-hanh { list-style: none; padding: 0; margin: .7rem 0; display: grid; gap: .6rem; text-align: left; }
.ph-dong-hanh li, .nc-dong-hanh li { padding: .75rem .95rem; background: rgba(8,11,20,.4);
  border: 1px solid rgba(216,180,92,.14); }
.ph-dong-hanh li.cua-toi, .nc-dong-hanh li.cua-toi { border-color: rgba(216,180,92,.5); }
.ph-dong-hanh b, .nc-dong-hanh b { font-weight: 500; color: var(--vang-sang); }
.ph-viec { margin: .35rem 0; }
.ph-dong-hanh small, .nc-dong-hanh small { display: block; color: var(--giay-chim); font-size: .85rem; line-height: 1.6; }
.ph-hoi .hang-nut { margin-top: .6rem; }

@media (max-width: 34rem) {
  .ph-ghe-la { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ph-hoi-dap .ph-la-nho, .ph-bi-mat .ph-la-nho { float: none; margin: .4rem auto; }
  .ph-dau-ti .ph-la-nho img { width: 5.4rem; }
}
@media (prefers-reduced-motion: reduce) {
  .ph-ghe-o { animation: none; }
}